Use the following models to show the equivalence of the fractions 35 and 610 a) Set model

Answers

Answer 1

Answer:

0

Step-by-step explanation:

Use the following models to show the equivalence of the fractions 35 and 610 a) Set model


Related Questions

Find the domain and range of function

Answers

Domain: (-∞, ∞) - all real numbers Range: (-∞, 2] - all real numbers less than or equal to 2.

To find the domain and range of the function 2 - |x - 5|, we need to consider the possible values for the input variable (x) and the corresponding output values.

Domain:

The domain of a function represents the set of all possible input values for which the function is defined. In this case, the function 2 - |x - 5| is defined for all real numbers. There are no restrictions or limitations on the values that x can take. Therefore, the domain is (-∞, ∞), which means that the function is defined for all real numbers.

Range:

The range of a function represents the set of all possible output values that the function can produce. To determine the range, we consider the possible values of the function for different input values.

The expression |x - 5| represents the absolute value of the quantity (x - 5). The absolute value function always produces non-negative values. So, |x - 5| will always be non-negative or zero.

When we subtract |x - 5| from 2, we have 2 - |x - 5|. The resulting values will range from 2 to negative infinity (2, -∞).

Therefore, the range of the function 2 - |x - 5| is (-∞, 2].

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Note the complete questions is

Find the domain and range of function 2 - |x - 5| ?

Let the variance of Y is 4x^2. What is the ​standard deviation of Y?

Select one:
a. none of the above
b. Square root of 4x^2
c. 2
d. 2x^2
e. x


Note: Answer D is NOT the correct answer. Please find the correct answer. Any answer without justification will be rejected automatically.

Answers

The correct answer is option (b): Square root of 4x^2.

The standard deviation of a random variable Y is the square root of its variance. In this case, the variance of Y is given as 4x^2. Taking the square root of 4x^2, we get the standard deviation of Y as 2x.

Therefore, the correct answer is the square root of 4x^2, which is the standard deviation of Y.

What is the first step in solving ab -c = d for a

Answers

Answer:

See below

Step-by-step explanation:

To solve for "a", you would first isolate ab on the right-hand side by adding "c" on both sides:

[tex]ab-c=d\\ab-c+c=d+c\\ab=d+c[/tex]

Next, you would divide both sides by "b" to isolate "a":

[tex]ab=d+c\\ab\div b=(d+c)\div b\\a = \frac{d+c}{b}[/tex]

The solution is:

[tex]\large\boldsymbol{a = \dfrac{d + c}{b}}[/tex]

Work/explanation:

To solve the given expression for a, we should isolate it by using basic algebraic operations.

The first step is to add c to each side:

[tex]\sf{ab-c=d}[/tex]

[tex]\sf{ab=d+c}[/tex]

Now, divide each side by b:

[tex]\sf{a=\dfrac{d+c}{b}}[/tex]

I have solved the equation for a.

Thrrefore, the answer is a = d + c / b.

Triangles J K L and M N R are shown. In the diagram, KL ≅ NR and JL ≅ MR. What additional information is needed to show ΔJKL ≅ ΔMNR by SAS? ∠J ≅ ∠M ∠L ≅ ∠R ∠K ≅ ∠N ∠R ≅ ∠K​

Answers

To show that ΔJKL ≅ ΔMNR by SAS (Side-Angle-Side), we need the additional information that the lengths of the corresponding sides JK and MN are equal.

To prove ΔJKL ≅ ΔMNR using the SAS congruence criterion, we need to establish that two corresponding sides and the included angle of the triangles are congruent.

1. Given information:

  - KL ≅ NR (corresponding sides)

  - JL ≅ MR (corresponding sides)

  - ∠J ≅ ∠M (included angle)

  - ∠L ≅ ∠R (corresponding angles)

  - ∠K ≅ ∠N (corresponding angles)

  - ∠R ≅ ∠K (corresponding angles)

2. Additional information needed:

  - We need to know if JK ≅ MN (corresponding sides) to establish the SAS congruence criterion.

3. Possible scenarios:

  - If JK ≅ MN, then we can establish that ΔJKL ≅ ΔMNR by SAS.

  - If JK is not equal to MN, then we cannot apply the SAS congruence criterion, and additional information or a different congruence criterion would be needed to prove the triangles congruent.

In summary, the lengths of the corresponding sides JK and MN need to be equal to prove ΔJKL ≅ ΔMNR by SAS. Without this information, we cannot conclude the congruence of the triangles using the SAS criterion alone.

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What is the value of this expression
please help ​

Answers

Answer:

a+2bc/3a....4+2(--5×--7)/3(4)....4+2(35)/12.....4+70/12...74/12..answer =6⅙..option C

Question 5(Multiple Choice Worth 1 points)

(01.07 MC)

Lines BC and ED are parallel. They are intersected by transversal AE, in which point B lies between points and E. They are also intersected by transversal EC. Angle ABC measures 70 degrees. Angle CED measures 30 degrees.

Given: line BC is parallel to line ED
m∠ABC = 70°
m∠CED = 30°

Prove:m∠BEC = 40°

Statement Justification
line BC is parallel to line ED Given
m∠ABC = 70° Given
m∠CED = 30° Given
m∠ABC = m∠BED Corresponding Angles Theorem

m∠BEC + 30° = 70° Substitution Property of Equality
m∠BEC = 40° Subtraction Property of Equality


Which of the following accurately completes the missing statement and justification of the two-column proof?

m∠BEC + m∠CED = m∠BED; Definition of a Linear Pair
m∠ABC + m∠BEC = m∠BED; Angle Addition Postulate
m∠ABC + m∠BEC = m∠BED; Definition of a Linear Pair
m∠BEC + m∠CED = m∠BED; Angle Addition Postulate

Answers

Answer:

m∠BEC + m∠CED = m∠BED; Angle Addition Postulate

Step-by-step explanation:

You need to show that <BED is made up of angles BEC and CED by the Angle Addition Postulate.

m∠BEC + m∠CED = m∠BED; Angle Addition Postulate

Please awnser asap I will brainlist

Answers

The transformed matrix, after interchanging R1 and R2, is:

2 9 4 5

8 -2 1 7

1 4 -4 9

To interchange rows R1 and R2, we swap the positions of the first and second rows in the matrix. This operation can be performed by physically swapping the rows or by using the properties of matrix operations. Let's apply this row operation to the given matrix:

Original matrix:

8 -2 1 7

2 9 4 5

1 4 -4 9

Interchanging R1 and R2, we get:

2 9 4 5

8 -2 1 7

1 4 -4 9

After switching R1 and R2, the modified matrix is:

2 9 4 5

8 -2 1 7

1 4 -4 9

In the transformed matrix, the original first row (8 -2 1 7) becomes the second row, and the original second row (2 9 4 5) becomes the first row. The remaining rows (R3) remain unchanged.

Therefore, R1 and R2 are switched, and the resulting matrix is:

2 9 4 5

8 -2 1 7

1 4 -4 9

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6. A rock outcrop was found to have 89.00% of its parent U-238 isotope remaining. Approximate the age of the outcrop. The half-life of U-238 is 4.5 billion years old. 12 million years 757 million years 1.2 billion years 37 million years​

Answers

The approximate age of the rock outcrop is 1.2 billion years.

To approximate the age of the rock outcrop, we can use the concept of radioactive decay and the half-life of the U-238 isotope.

The half-life of U-238 is 4.5 billion years, which means that after each half-life, the amount of U-238 remaining is reduced by half.

We are given that the rock outcrop has 89.00% of its parent U-238 isotope remaining.

This means that the remaining fraction is 0.8900.

To find the number of half-lives that have elapsed, we can use the following formula:

Number of half-lives = log(base 0.5) (fraction remaining)

Using this formula, we can calculate:

Number of half-lives = log(base 0.5) (0.8900)

≈ 0.1212

Since each half-life is 4.5 billion years, we can find the approximate age of the rock outcrop by multiplying the number of half-lives by the half-life duration:

Age of the rock outcrop = Number of half-lives [tex]\times[/tex] Half-life duration

≈ 0.1212 [tex]\times[/tex] 4.5 billion years

≈ 545 million years

Therefore, the approximate age of the rock outcrop is approximately 545 million years.

Based on the answer choices provided, the closest option to the calculated value of 545 million years is 757 million years.

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35-14÷2 +8²

What’s the answer

Answers

Answer:

93

Step-by-step explanation:

Remember PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction)

35 - 12 : 2 + 8² =

35 - 6 + 64 =

93

22. In a study was done on 136 subjects with syncope or near syncope were studied. Syncope is the temporary loss of consciousness due to a sudden decline in blood flow to the brain. Of these subjects, 75 also reported having cardiovascular disease. Construct a 90,95, 99 percent confidence interval for the population proportion of subjects with syncope or near syncope who also have cardiovascular disease.

Answers

The main answer is that the confidence intervals for the population proportion of subjects with syncope or near syncope who also have cardiovascular disease, at 90%, 95%, and 99% confidence levels, are as follows:

90% Confidence Interval: Approximately 51.84% to 70.53%

95% Confidence Interval: Approximately 49.77% to 72.60%

99% Confidence Interval: Approximately 46.48% to 76.89%

In the study, out of the 136 subjects with syncope or near syncope, 75 reported having cardiovascular disease.

To construct the confidence intervals, we can use the formula for a proportion's confidence interval. The formula is based on the normal distribution assumption when sample size is large enough, which is satisfied here.

By plugging in the sample proportion (75/136) and the appropriate critical values based on the desired confidence level (1.645 for 90%, 1.96 for 95%, and 2.576 for 99%), we can calculate the lower and upper bounds for each confidence interval.

These confidence intervals provide an estimate of the likely range within which the true population proportion lies.

For example, with 95% confidence, we can say that we are 95% confident that the true proportion of subjects with syncope or near syncope who also have cardiovascular disease falls between approximately 49.77% and 72.60%.

The wider the confidence interval, the lower the precision of the estimate, but the higher the level of confidence.

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Pls help pls help help help help

Answers

Answer:

The correct answer is

A.    [tex]pq^4r^4[/tex]

Step-by-step explanation:

Measurement techniques used to measure extent of skewness in data set values are called

Select one:
a. Measure of skewness
b. Measure of median tail
c. Measure of tail distribution
d. Measure of distribution width
e. Measure of peakdness


Note: Answer C is NOT the correct answer. Please find the correct answer. Any answer without justification will be rejected automatically.

Answers

Answer:

a. Measure of skewness

Step-by-step explanation:

Skewness is a measure of the asymmetry of a probability distribution. It quantifies the extent to which a dataset's values deviate from a symmetric distribution. Various measures of skewness exist, including the Pearson's skewness coefficient, the Bowley skewness coefficient, and the moment coefficient of skewness. These measures provide a numerical indication of the skewness present in the dataset.

2AI + 3H₂SO4
To show that the reaction conserves matter, how many hydrogen (H) atoms
will the right side of the equation need to have?
A. 6
B. 3
C. 2
OD. 5

Answers

Answer:

A. 6

Step-by-step explanation:

You have 3 molecules of H2SO4, each molecule has two atoms of H and you have 3 molecules, so 3*2=6 atoms of H

The statement of cash flows for Baldwin shows what happens in the cash account during the year. It can be seen as a summary of the sources and uses of cash. Pleas answer which of the following is true if Baldwin issues bonds

Answers

If Baldwin issues bonds, the following statement would be true regarding the statement of cash flows:

The statement of cash flows would show an increase in the cash account due to the inflow of cash from the issuance of bonds.

When a company issues bonds, it typically receives cash from the bondholders as a form of borrowing. This inflow of cash would be categorized as a financing activity on the statement of cash flows. The specific section of the statement of cash flows that would capture this inflow would be the "Cash Flows from Financing Activities" section.

Therefore, if Baldwin issues bonds, the statement of cash flows would reflect an increase in the cash account due to the inflow of cash from the bond issuance.

If PQ¯ is tangent to circle R at point Q, and PS¯ is tangent to ⊙R at point S, what is the perimeter of quadrilateral PQRS?

Answers

The perimeter of PQRS would depend on the lengths of the tangent segments and the lengths of the intercepted arcs. Without specific measurements, we cannot determine the precise perimeter.

To determine the perimeter of quadrilateral PQRS, we need more information about the lengths of the sides or the relationship between the sides and angles. Without specific measurements or additional details, we cannot calculate the exact perimeter of the quadrilateral.

However, we can provide some general information.Since PQ¯ is tangent to circle R at point Q, it is perpendicular to the radius drawn from the center of the circle to point Q. Similarly, PS¯ is tangent to circle R at point S, so it is perpendicular to the radius drawn to point S.

The quadrilateral PQRS is formed by the tangents PQ¯ and PS¯ along with the two arcs intercepted by these tangents on the circle R.

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Find the measure of the indicated angle.
45°
65°
55°
135°
270°
T

Answers

Answer: 55 degrees, a circle which a line is set on top of, as long as it rotates on the center along the circumference the total area is 360 degrees

what is $2^{-3}\cdot 3^{-2}$.

Answers

Answer:

[tex]\frac{1}{72}[/tex]

Step-by-step explanation:

[tex]2^{-3}\cdot 3^{-2}=\frac{1}{2^3}\cdot\frac{1}{3^2}=\frac{1}{8}\cdot\frac{1}{9}=\frac{1}{72}[/tex]

. Mira bought $300 of Freerange Wireless stock in
January of 1998. The value of the stock is expected
to increase by 7.5% per year. Use a graph to predict
the year the value of Mira's stock will reach $650.

Answers

To predict the year when the value of Mira's stock will reach $650, we can use the given information that the value of the stock is expected to increase by 7.5% per year. We can create a graph to visualize the growth of the stock value over time.

Let's assume that the x-axis represents the years starting from 1998 and the y-axis represents the value of the stock. We'll plot the initial value of $300 in January 1998 and then project the growth based on an annual increase of 7.5%.

Here's a rough representation of the graph:

```
| /
650| /
| /
| /
|/
|_________________
1998 1999
```

Based on this graph, it appears that the value of Mira's stock will reach $650 in the year 1999.

Please note that this is a simplified approximation based on the given growth rate and does not take into account factors such as market fluctuations or compounding. The actual year of reaching $650 may vary depending on various real-world factors.

What’s the value of each variable in the parallelogram

Answers

Answer:

m = 5

n = 12

Step-by-step explanation:

The parallel sides of a parallelogram are equal.

m +1 = 6 so m = 6 -1 = 5, and n = 12

Answer:

m = 5 , n = 12

Step-by-step explanation:

the opposite sides of a parallelogram are congruent , then

m + 1 = 6 ( subtract 1 from both sides )

m = 5

and

n = 12

Please help me out with this question.

Answers

Answer:

Assuming options are independent or not independent/dependent, it would be not independent

Step-by-Step:

Probability of (A given B) = Probability(A)

P(A & B) divided by P(B) = P(A)

(1/9)/(1/15) = 2/5

5/3 = 2/5

Since 5/3 doesn't equal 2/5, the events if A and B are not independent

Circle 1 has center (-6, 2) and a radius of 8 cm. Circle 2 has center (-1,-4) and a radius 6 cm.
What transformations can be applied to Circle 1 to prove that the circles are similar?
Enter your answers in the boxes. URGENT PLEASE!!

Answers

Circle 1 (-6, 2) with a radius of 8 cm can be transformed into Circle 2 (-1, -4) with a radius of 6 cm through translation, scaling, and translation, proving their similarity.

To prove that two circles are similar, we need to find a sequence of transformations that maps one circle to another circle. In this case, we need to find a sequence of transformations that map Circle 1 to Circle 2. Circle 1 has a center (-6, 2) and a radius of 8 cm. Circle 2 has a center (-1,-4) and a radius of 6 cm.

Let's write the equations of the two circles:C1: (x + 6)² + (y - 2)² = 64C2: (x + 1)² + (y + 4)² = 36Step 1: TranslationWe can translate Circle 1 by (-5,-6) to obtain a new circle with center at the origin. The equation of the translated circle is C1': (x + 11)² + (y - 4)² = 64Step 2: Scale

We can scale the translated Circle 1' by a factor of 3/4 to obtain a circle with a radius of 6.

The equation of the scaled circle is C1'': (x + 11)² + (y - 4)² = 36Step 3: TranslationWe can translate the scaled Circle 1'' by (2,-4) to obtain a new circle with center at (-1,-4). The equation of the translated circle is C1''': (x - 1)² + (y + 4)² = 36The transformations applied to Circle 1 to obtain Circle 2 are:

Translation by (-5,-6)

Scale by 3/4

Translation by (2,-4)

Therefore, we can say that Circle 1 and Circle 2 are similar. Circle 1 can be transformed into Circle 2 by translation, scale, and translation.

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The following pie chart shows the number of rabbits, sheep, cattle, pigs on a farm rabbits 900 sheep 700 cattle 300 Pig 500 a. How many animals are on the farm? b.What represents the number of sheep on the farm c. what percentage of the total number of animals are rabbits d. Calculate the angle that represents number of pigs​

Answers

a) There are 2400 animals on the farm.

b) The number of sheep on the farm is 700.

c) The percentage of rabbits in relation to the total number of animals is 37.5%.

d) The angle that represents the number of pigs is 75 degrees.

a) To determine the total number of animals on the farm, we add up the number of rabbits, sheep, cattle, and pigs:

Total number of animals = 900 (rabbits) + 700 (sheep) + 300 (cattle) + 500 (pigs) = 2400 animals.

b) The number of sheep on the farm is given as 700.

c) To calculate the percentage of rabbits in relation to the total number of animals, we divide the number of rabbits by the total number of animals and multiply by 100:

Percentage of rabbits = (900 / 2400) * 100 = 37.5%.

d) To calculate the angle that represents the number of pigs, we need to find the proportion of the total number of animals that pigs make up, and then convert it to an angle on the pie chart.

Proportion of pigs = 500 / 2400 = 0.2083.

To find the angle in degrees, we multiply the proportion by 360 degrees:

Angle representing pigs = 0.2083 * 360 = 75 degrees.

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Tyrone places a carton of milk and a box of cookies together. The carton of milk has a length of 6 inches, a width of 4 inches, and a height of 8 inches. The box of cookies has a length of 5 inches, a width of 4 inches, and a height of 2 inches. What is the combined volume of the boxes?

Answers

Therefore, the combined volume of the carton of milk and the box of cookies is 232 cubic inches.

To find the combined volume of the carton of milk and the box of cookies, we need to calculate the volume of each object and then add them together.

The volume of an object can be found by multiplying its length, width, and height. Let's calculate the volume for each item:

   Carton of milk:

   Volume = Length × Width × Height

   = 6 inches × 4 inches × 8 inches

   = 192 cubic inches

   Box of cookies:

   Volume = Length × Width × Height

   = 5 inches × 4 inches × 2 inches

   = 40 cubic inches

Now, we can find the combined volume by adding the volumes of the carton of milk and the box of cookies:

Combined Volume = Volume of Carton of milk + Volume of Box of cookies

= 192 cubic inches + 40 cubic inches

= 232 cubic inches

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An office manager needs to cover the front face of a rectangular box with a label for shipping. the vertices of the face are (-5, 8), (3, 8), (-5, -4), and (3, -4). what is the area, in square inches, of the label needed to cover the box?
98 in2
48 in2
40 in2
20 in2​

Answers

The area of the label needed to cover the box is 96 square inches. None of the provided answer options (98 in², 48 in², 40 in², or 20 in²) match the calculated area of 96 in².

We must determine the area of the rectangle formed by the provided vertices in order to determine the size of the label required to completely cover the front face of the rectangular box.

Let's label the vertices as follows:

A = (-5, 8)

B = (3, 8)

C = (-5, -4)

D = (3, -4)

The formula to calculate the area of a rectangle given the coordinates of its vertices is:

Area = |(x2 - x1) * (y2 - y1)|

Using the given coordinates, we can calculate the area:

Area = |(3 - (-5)) * (8 - (-4))|

Simplifying the expression:

Area = |(3 + 5) * (8 + 4)|

Area = |8 * 12|

Area = 96 square units

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4x+y20
find the value of y when x =6

Answers

Answer:

y= -4

Step-by-step explanation:

To find the value of y when x = 6, we can substitute x = 6 into the equation and solve for y:

4(6) + y = 20

24 + y = 20

y = 20 - 24

y = -4

Therefore, when x = 6, y is equal to -4.

(-7,3))
10
Mark this and return
8
(-2,5) 6-
4-
(-2,1) 2-
12-10-8 -6 - -2
-2-
2
(3,3)
Which equation represents the hyperbola shown in the
graph?
O
O
O
(x - 2)² (v+3)² = 1
25
O
(x + 2)²
ܕ ܬܒܐ ܙ
(x + 2)²
25
(x - 2)²
25
(y-3)² 1
25
Save and Exit
(y - 3)²
4
(y + 3)²
Next
Submit

Answers

The equation that represents the hyperbola shown in the graph is (y - 3)²/4 - (x + 2)²/25 = 1.

From the given options, the equation that represents the hyperbola shown in the graph is (y - 3)²/4 - (x + 2)²/25 = 1.

To determine the equation of a hyperbola, we examine the standard form:

For a hyperbola centered at (h, k), with vertical transverse axis, the standard form is:

(y - k)²/a² - (x - h)²/b² = 1

From the given graph, we can observe that the center of the hyperbola is (-2, 3). This corresponds to the values of (h, k) in the standard form.

Next, we need to determine the values of a and b, which are the lengths of the transverse and conjugate axes, respectively. Looking at the graph, we see that the transverse axis has a length of 2a = 4, so a = 2. The conjugate axis has a length of 2b = 10, so b = 5.

Plugging these values into the standard form, we obtain:

(y - 3)²/4 - (x + 2)²/25 = 1

The equation that represents the hyperbola shown in the graph is (y - 3)²/4 - (x + 2)²/25 = 1.

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The correct equation representing the hyperbola shown in the graph is:

(x + 2)²/25 - (y - 3)²/4 = 1.

The equation that represents the hyperbola shown in the graph is:

(x + 2)²/25 - (y - 3)²/4 = 1

Let's analyze the options provided:

(x - 2)²(v + 3)² = 1:

This equation is not a valid representation of a hyperbola because it contains a term (v + 3)², which is not consistent with the variable used in the graph.

(x + 2)²/25:

This equation represents a horizontal parabola, not a hyperbola.

(x - 2)²/25:

This equation represents a horizontal parabola, not a hyperbola.

(y - 3)²/1:

This equation represents a vertical line, not a hyperbola.

(y - 3)²/4:

This equation represents a hyperbola with a vertical transverse axis and a conjugate axis length of 2b = 4 (b = 2).

The equation is in the standard form for a hyperbola with a vertical transverse axis.

The equation is provided as a standard form assuming the given coordinates and graph match the standard form representation of a hyperbola.

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the table shows how the distance traveled by a dogsled is changing over time
what value is missing from the table

Answers

The missing value in the table is 64 miles.The correct answer is option C.

To determine the missing value in the table, we can observe the pattern in the given data. Looking at the time values, we can see that they are increasing by a constant interval of 2 hours: 2, 4, 6, 8, 10. The corresponding distances traveled are 16, 32, 48, ?, 80.

By examining the distances, we can see that they are increasing by a constant interval of 16 miles. The first distance is 16 miles when the time is 2 hours, and it increases by 16 miles for every 2-hour increment.

To find the missing value, we need to determine the distance traveled at 8 hours. Since the interval is 16 miles for every 2 hours, the distance traveled at 8 hours can be calculated by multiplying the interval by the number of 2-hour increments from the first data point: 16 miles * (8 hours / 2 hours) = 16 miles * 4 = 64 miles.

Therefore, the missing value in the table is 64 miles, which corresponds to option C.

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The probable question may be:

The table shows how the distance traveled by a dogsled is changing over time.

Time (in hours) :- 2,4,6,8,10.

Distance Traveled (In miles) :- 16,32,48,?,80.

What value is missing from the table?

A. 50.

B. 68.

C. 64.

D. 60.

Your firm has the option of making an investment in new software that will cost $172,395 today, but will save the company money over several years. You estimate that the software will
provide the savings shown in the following table over its 5-year life, . Should the firm make this investment if it requires a minimum annual return of 8% on all investments?
The present value of the stream of savings estimates is $ (Round to the nearest dollar)

Answers

The present value of the stream of savings estimates is approximately $200,256.

To determine whether the firm should make the investment in new software, we need to calculate the present value of the stream of savings estimates and compare it to the cost of the software.

The present value (PV) of the savings estimates can be calculated using the formula:

[tex]PV = C1/(1+r)^1 + C2/(1+r)^2 + ... + Cn/(1+r)^n[/tex]

Where C1, C2, ..., Cn represent the savings in each year, r is the minimum annual return required (8% or 0.08), and n is the number of years (5).

Given the savings estimates in the table, we have:

C1 = $35,000

C2 = $45,000

C3 = $50,000

C4 = $55,000

C5 = $60,000

Plugging these values into the present value formula and using the minimum annual return rate of 8% (0.08), we can calculate:

[tex]PV = 35000/(1+0.08)^1 + 45000/(1+0.08)^2 + 50000/(1+0.08)^3 + 55000/(1+0.08)^4 + 60000/(1+0.08)^5[/tex]

Evaluating this expression, we find that the present value of the stream of savings estimates is approximately $200,256.

Since the present value of the savings estimates is greater than the cost of the software ($172,395), the firm should make this investment. The investment is expected to provide a return greater than the minimum required annual return of 8%.

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The present value of the stream of savings estimates is $149,622.

To determine if the firm should make the investment, we need to calculate the present value of the stream of savings estimates and compare it to the initial cost of the software.

The present value (PV) of the savings estimates can be calculated using the formula:

PV = C1/(1+r)¹ + C2/(1+r)² + ... + Cn/(1+r)ⁿ

Where:

PV = Present value

C1, C2, ..., Cn = Cash flows in each period

r = Discount rate (minimum annual return)

Given the savings estimates in the table over a 5-year period and a minimum annual return of 8% (0.08), we can calculate the present value as follows:

PV = $15,000/(1+0.08)¹ + $35,000/(1+0.08)² + $50,000/(1+0.08)³ + $45,000/(1+0.08)⁴ + $40,000/(1+0.08)⁵

PV = $13,888.89 + $30,864.20 + $41,152.46 + $34,682.34 + $29,034.09

PV = $149,621.98 (rounded to the nearest dollar)

The present value of the savings is higher than the initial cost of the software ($172,395), the firm should make this investment if it requires a minimum annual return of 8% on all investments.

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Which is a valid prediction about the continuous function f(x)? • f(x) ≥ 0 over the interval [5, ∞). • f(x) ≤ 0 over the interval [-1, ∞). • f(x) > O over the interval (-0, 1). • f(x) < O over the interval (-0. -1).

Answers

Answer:

The valid prediction about the continuous function f(x) is : f(x) ≥ 0 over the interval [5, ∞).

Step-by-step explanation:

The times taken for a group of people to
complete a race are shown below.
Estimate the number of people who took
longer than 325 minutes to complete the
race.
Cumulative frequency
250-
200-
150-
100-
50-
0
Time to complete a race
100 200 300 400 500
Time (minutes)

Answers

An estimate of 20 people took longer than 325 minutes to complete the race.

To estimate the number of people who took longer than 325 minutes to complete the race, we need to use the cumulative frequency distribution.

The cumulative frequency of a class interval is obtained by adding up the frequencies of all the class intervals up to and including that interval. The sum of the frequencies for each class interval is known as the cumulative frequency.In this case, the cumulative frequency distribution is given as follows:

Class Interval  |  Frequency  |  Cumulative Frequency250 - 200  |  5  |  5200 - 150  |  12  |  12150 - 100  |  18  |  30100 - 50  |  11  |  4050 - 0  |  4  |  44Total: 50

Now, to estimate the number of people who took longer than 325 minutes to complete the race, we need to look at the cumulative frequency that corresponds to 325 minutes.

From the table, we can see that the cumulative frequency of the class interval 300-400 minutes is 30. This means that 30 people took between 100 and 400 minutes to complete the race.

Therefore, the number of people who took longer than 325 minutes is the difference between the total number of people who took between 100 and 500 minutes and the number of people who took between 100 and 325 minutes. This can be calculated as follows:50 - 30 = 20.

Hence, an estimate of 20 people took longer than 325 minutes to complete the race.

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The probable question may be:

Estimate the number of people who took longer than 325 minutes to complete the race, given the following cumulative frequency distribution:

Cumulative frequency:

250-

200-

150-

100-

50-

0

Time to complete a race:

100 200 300 400 500

Time (minutes).

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