The solution for the given system is x1 = (23/5s - x2)/4s, x2, where s ≠ -360/49 and x2 can be any non-zero
Determine the values of the parameter s?The values of the parameter s
for which the system has a unique solution are s ≠ -45/8. Let's understand how to find the solution and the values of s:
Given equation of the system is,5x1s + 9x2 = -3 ...(1)
5x1 + sx2 = 4 ...(2)
Now, let's solve the given system of equations using the elimination method:
Multiply equation (2) by 5, we get:25x1 + 5sx2 = 20 ...(3)
Now, we'll subtract equation (1) from equation (3) as:
25x1 + 5sx2 = 20- (5x1s + 9x2 = -3)20x1 + 5sx2 = 23 ... (4)
Let's divide equation (4) by 5s, we get:
4x1 + x2/s = 23/5s ... (5)
Multiply equation (2) by 9 and subtract equation (1) from it. We get:40x2 + 9sx2 = 39
Simplifying the above equation, we get:(49s+360)x2 = 39 ... (6)
Now, we have two equations:(5) 4x1 + x2/s = 23/5s(6) (49s+360)
x2 = 39The given system of equations will have a unique solution only if x2 ≠ 0. So, let's consider the value of x2.If x2 ≠ 0, then from equation (6)
we get,49s+360 ≠ 0 or s ≠ -360/49
This means that s ≠ -360/49 is necessary for the given system to have a unique solution.
Now, let's solve the equation (5):4x1 + x2/s = 23/5s
If we multiply both sides of the equation (5)
by s, we get:
4sx1 + x2 = 23/5If x2 ≠ 0, then we can solve this equation for x1 as:
x1 = (23/5s - x2)/4s
Therefore, the solution for the given system is x1 = (23/5s - x2)/4s, x2, where s ≠ -360/49 and x2 can be any non-zero value.
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It’s due tdddd help
Answer:
-46
Step-by-step explanation:
-7×-7= 49
3-49= -46
-46 is the answer
Is this dilation a reduction or an enlargement
As, the scale factor is less than 1 . So, the dilation is the reduction for the image of triangle ABC.
Explain about the dilation:How very much larger (as well as smaller) any item becomes following the transformation is indicated by the dilation factor.
The object doubles in size, for instance, if the dilation factor is 2. In other words, every one of its side lengths are doubled.The converted object is half its original size if the dilation factor is equal to 1. In particular, all of its side lengths would be cut in half.Given data:
A'B'C' is the dilation of triangle ABC.
Scale factor = 1/2 = 0.5
As, the scale factor is less than 1 . So, the dilation is the reduction for the image of triangle ABC
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It takes 28 minutes to play 8 songs on a radio. Every song is played for the same length of time. How long does it take to play 1 song?
Answer: 3 minutes and 30 seconds, or 3.5 minutes
Melissa knows that
h
(
1
)
=
23
and
h
(
a
)
=
34
.
25
meters.
What is a reasonable estimate of the average rate of change of the height of the rocket, in meters per second, between
a
and
b
seconds? Explain your reasoning.
Answer:
put 23
and be my freind pleas i only have 2
A quadratic function y = f(x) is plotted on a graph and the vertex of the resulting
parabola is (-6, 6). What is the vertex of the function defined as g(x) = f(= - 2)?
y=f(x) has vertex (-4,6)
g(x)=-f(x-2) shifts the graph 2 units to the right, not to the left, and the graph is reflected over the x-axis
therefore the vertex is (-2,6) and the reflection over the x-axis has no affect on the vertex
the revenue from selling items is , and the total cost is . write a function that gives the total profit earned, and find the quantity which maximizes the profit.
Solving for q will give us the optimal quantity that maximizes the profit, a function that gives the total profit earned can be written as:
Profit(q) = (Revenue per item - Cost per item) * q
Assuming that the revenue and cost are functions of the quantity sold (q), the total profit can be calculated as follows:
Profit(q) = Revenue(q) - Cost(q)
To find the quantity which maximizes the profit, we can take the derivative of the profit function with respect to q and set it equal to zero, and then solve for q:
Profit'(q) = Revenue'(q) - Cost'(q) = 0
Solving for q will give us the quantity that maximizes the profit. However, without knowing the specific forms of the revenue and cost functions, we cannot write a specific profit function or find the quantity that maximizes the profit.
In general, the profit function can be written as:
Profit(q) = (Revenue per item - Cost per item) * q
where the revenue per item and cost per item are functions of q. To find the quantity that maximizes the profit, we need to differentiate the profit function with respect to q and set it equal to zero:
Profit'(q) = Revenue'(q) - Cost'(q) = 0
Solving for q will give us the optimal quantity that maximizes the profit.
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draw up a frequency table where you tally five different reasons for taking a gap year
In the frequency table, we can see that the most common reason for taking a gap year is travel, with a frequency of 5.
To draw up a frequency table for the given question, we can use the following : List down the reasons:
List down the five different reasons for taking a gap year.
Count the frequency of each reason:
Tally the number of times each reason appears in the data.
Let's say we have the following data:
Reasons for taking a gap year:
Travel Work Experience Family Medical Total Tally
the number of times each reason appears in the data:
Reasons for taking a gap year Tally Frequency Travel Work Experience Family Medical Total
Draw the frequency table:
Draw the frequency table by filling in the tally and frequency columns.
The final frequency table should look like this:
Frequency Table Reasons for taking a gap year Tally Frequency Travel [tex]||||5Work|||3Experience||||4Family||2Medical|1|2| Total5 3 4 2 2 16[/tex]
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PLEASE help Will give brainliest
The recursive and explicit formulae of the given arithmetic expression are:
Recursive formular = [tex]a_{n+1} = a_{n-5}[/tex]
Explicit formular is Tn = 68 - 53n
Explain explicit formulas and recursive formulas.You can determine the value of any term in a series using an explicit formula. A subset of integers are the natural numbers, which are 1, 2, 3, 4, etc. If you know the value of the (n-1)th term in a series and have access to its recursive formula, you can use it to determine the value of the nth term. The primary distinction between recursive and explicit formulas is that the former provides the value of a particular phrase based on the preceding term, while the latter provides the value of a particular term based on the position.
Given:
a1 = 63
a2 = 67 = 63 - 5 = a1 - 5
Recursive formular = [tex]a_{n+1} = a_{n-5}[/tex]
a = 63, d = -5
F(11) = a + (n - 1)d = 63 + (n - 1)-5 = 63 - 5n + 5 = 68 - 53n
Explicit formular is Tn = 68 - 53n
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what is the quadratic equation of y=(x+4)²+3
Answer:
y = x^2 + 8x + 19
Step-by-step explanation:
y=(x+4)²+3
First expand the parentheses:
y = x^2 + 4x + 4x + 16 + 3
y = x^2 + 8x + 19
The weather forecast is shown. What is the
difference between the median high
temperature and median low temperature?
Sun Mon Tues Weds Thurs Fri Sun
High 84°F 90°F 82°F 79°F 83°F 92°F 82°F
Low 56°F 63°F 60°F
52°F
60°F
61°F 53°F
The difference between the median high temperature and median low temperature is 22.5°F
The median of the data:The data set has an odd number of values, the median is the middle value when the data is arranged in numerical order.
Hence Median of the data is given by
Median = value at position (n + 1) / 2,
where n is the number of data points.
Here we have
The weather forecast is shown.
High 84°F 90°F 82°F 79°F 83°F 92°F 82°F
Low 56°F 63°F 60°F 52°F 60°F 61°F 53°F
To find the difference between the median high temperature and the median low temperature, Calculate the median temperatures for both high and low temperatures.
To find the median, we need to first arrange the temperatures in ascending order
For the high temperatures, we have:
79°F, 82°F, 82°F, 83°F, 84°F, 90°F, 92°F
Here median = 4th term [ Since the number of terms 7 is an odd number ]
The median of high temparature = 83°F
For the low temperatures, we have:
52°F, 53°F, 56°F, 60°F, 60°F, 61°F, 63°F
Here median = 4th term [ Since the number of terms 7 is an odd number ]
The median of low temparature = 60°F
The difference between the median high temperature and median low temperature is:
83°F - 60.5°F = 22.5°F
Therefore,
The difference between the median high temperature and median low temperature is 22.5°F
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If a family deposits $500 at the beginning of the first year into a bank account that pays 7% annual interest, how much will the family have in the account at the end of 15 years (Hint: $500 is a0, think about a1 as the value of the account at the end of the 1st year.)
the answer is 13,444.03 its given to us i just need the work to show how i can get the answer
The family will have approximately $13,444.03 in the account at the end of 15 years.
To find the value of the account at the end of 15 years, we'll use the formula for compound interest, which is:
A = P * (1 + r)^n
Where A is the final amount,
P is the principal amount (the initial deposit),
r is the annual interest rate (as a decimal), and n is the number of years.
In this case, P = $500,
r = 7% (0.07),
and n = 15.
Step 1: Convert the interest rate to a decimal:
7% = 0.07
Step 2: Add 1 to the interest rate: 1 + 0.07 = 1.07
Step 3: Raise the result from Step 2 to the power of the number of years:
[tex](1.07)^15[/tex]≈ 2.7591
Step 4: Multiply the principal amount by the result from Step 3:
$500 * 2.7591 ≈ $1377.55.
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Ten cc of a solution of acid and water is 30% acid. I wish to dilute the acid in the mixture by adding water to make a mixture that is only 6% acid. How much pure water must I add to accomplish this?
Let's call the amount of pure acid in the original 10cc solution A.
A = 0.3(10cc) = 3cc
Let's also call the amount of pure water we need to add to dilute the solution by x cc.
So after we add x cc of water, we have a new solution with a total volume of (10 + x) cc, and the amount of pure acid in the new solution is still 3cc.
To have a 6% acid solution, we know that:
3cc / (10 + x) cc = 0.06
Solving for x:
3cc = 0.06(10 + x)cc
3cc = 0.6 + 0.06x cc
2.4cc = 0.06x cc
x = 40cc
So we need to add 40cc of pure water to dilute the 10cc 30% acid solution to a 6% acid solution.
determine the equation of the circle with center (5,5) containing the point (0,-2)
The equation of the circle with center (5,5) containing the point (0,-2) is [tex](x - 5)^2 + (y - 5)^2 = 74[/tex]
What is the equation of the circle?The standard equation of a circle is given by: (x-h)2 + (y-k)2 = r2 Where (h,k) is the coordinates of center of the circle and r is the radius.
To determine the equation of the circle, we need to find the radius first. Since the center of the circle is (5,5), we can use the distance formula to find the distance between the center and the given point (0,-2):
[tex]distance = \sqrt{[(x2 - x1)^2 + (y2 - y1)^2]}\\distance = \sqrt{[(0 - 5)^2 + (-2 - 5)^2]}\\distance = \sqrt{[(-5)^2 + (-7)^2]}\\distance = \sqrt{[25 + 49]}\\distance = \sqrt{[74]}[/tex]
Therefore, the radius of the circle is sqrt[74].
Now, we can use the standard form of the equation of a circle to find the equation of the circle:
[tex](x - h)^2 + (y - k)^2 = r^2[/tex]
where (h,k) is the center of the circle, and r is the radius.
Plugging in the values we have:
[tex](x - 5)^2 + (y - 5)^2 = (\sqrt{[74]})^2[/tex]
Simplifying the equation:
[tex](x - 5)^2 + (y - 5)^2 = 74[/tex]
Therefore, the equation of the circle with center (5,5) containing the point (0,-2) is [tex](x - 5)^2 + (y - 5)^2 = 74.[/tex]
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This camera was on sale for 20% off.
If Alex paid $220, what was the full original price?
Answer: The full price was 275
The daily high temperatures in degrees Fahrenheit in Allentown, PA, for a period of 10 days are shown below. 76 80 89 96 98 100 98 91 89 82 Which statement correctly describes the data?
A the median value is 98
B the upper quartile value is 96
C the lower quartile vlue is 76
d the interquartile range is 16
Answer:
the only correct statement is B: the upper quartile value is 96.
Step-by-step explanation:
First, let's put the temperatures in order: 76, 80, 82, 89, 89, 91, 96, 98, 98, 100.
A. To find the median, we need to find the middle value in the ordered set of data. Since there are an even number of values, we take the average of the two middle values. The two middle values are 89 and 91, so the median is (89+91)/2 = 90. Therefore, statement A is false.
B. To find the upper quartile, we need to find the value that separates the highest 25% of the data from the rest. Since there are 10 values, the upper quartile is the 7th value when the data is ordered. The 7th value is 96, so statement B is true.
C. To find the lower quartile, we need to find the value that separates the lowest 25% of the data from the rest. Since there are 10 values, the lower quartile is the 3rd value when the data is ordered. The 3rd value is 82, so statement C is false.
D. The interquartile range is the difference between the upper quartile and the lower quartile. From our previous calculations, we know that the upper quartile is 96 and the lower quartile is 82. Therefore, the interquartile range is 96-82 = 14. Statement D is false.
Therefore, the only correct statement is B: the upper quartile value is 96.
the probability distribution for the number of automobiles lined up at a lakeside olds dealer at opening time (7:30 am) for service is number probability 1 0.20 2 0.20 3 0.40 4 0.20 on a typical day, how many automobiles should lakeside olds expect to be lined up at opening time?
Lakeside Olds can expect around 2.6 automobiles to be lined up at the opening time for service.
To find the expected number of automobiles lined up at the opening time, we can use the following formula is used
Expected value = Σ (number of automobiles * probability)
Using the probability distribution provided in the question, we have:
Expected value = (10.20) + (20.20) + (30.40) + (40.20)
Expected value = 0.20 + 0.40 + 1.20 + 0.80
Expected value = 2.6
Therefore, on a typical day, Lakeside Olds can expect around 2.6 automobiles to be lined up at the opening time for service.
Note that since the expected value is not a whole number, it is an estimate and may not represent the actual number of automobiles on any given day.
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CAN SOMEONE PLEASE HELP!!!!
A family is filling up a circular pool. The pool has a depth of 6 feet and a diameter of 10 feet. If there are approximately 7.48 gallons of water in a cubic foot, how many gallons of water will it take to fill up the pool completely? Use π = 3.14 and round to the nearest gallon.
63 gallons
471 gallons
1,409 gallons
3,523 gallons
3,523 gallons
Help me answer this plss
Answer:
155.5 square feet
Step-by-step explanation:
A = (1/2)(10)(8.6 + 6.3 + 8.6 + 7.6)
= 5(31.1)
= 155.5 square feet
I NEED HELP ASAPPPPPP
Answer:
0.0399148483 is the answer
Answer:
Your answer is 0.0399
Step-by-step explanation:
all of the permutations of the digits 1, 3, 5, 7 and 9 are listed in numerical order from 13,579 to 97,531. what is the 100th permutation in the list?
The 100th permutation in the list is 75931, which starts with the digit 7 and is the 4th permutation starting with 7.
To find the 100th permutation, we can use the formula for the total number of permutations of n distinct objects, which is n! (n factorial).
In this case, there are 5 digits, so there are 5! = 120 permutations in total. Since the permutations are listed in numerical order, we can divide the total number of permutations by 5 to find the number of permutations starting with each digit.
120 ÷ 5 = 24
This tells us that there are 24 permutations starting with each digit. To find the 100th permutation, we need to determine which digit it starts with. We can do this by dividing 100 by 24 and taking the quotient and remainder:
100 ÷ 24 = 4 with a remainder of 4
This tells us that the 100th permutation starts with the fourth digit in the sequence: 7. We now need to find the 4th permutation starting with 7. To do this, we can list all the permutations starting with 7 in numerical order:
7 _ _ _ _ (4! = 24 permutations)
7 1 _ _ _
7 3 _ _ _
7 5 _ _ _
7 9 _ _ _
The 4th permutation starting with 7 is 75_9_, which is the 100th permutation in the list.
Therefore, the 100th permutation in the list is 75931.
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Use ≈ 3.14 and round your answer to the nearest hundredth. 10 m 14 m square meters
The area of a rectangle is 140.00 square meters.
What is a rectangle?
A rectangle is a 2-dimensional geometric shape with four sides, where each interior angle is a right angle (90 degrees). It is a special case of a parallelogram, where opposite sides are equal in length and parallel to each other.
I assume you are looking for the area of a rectangle with sides 10 m and 14 m, rounded to the nearest hundredth using the approximation π ≈ 3.14.
The area of a rectangle is given by the formula A = lw, where l and w are the length and width of the rectangle, respectively. In this case, l = 14 m and w = 10 m, so:
A = lw = (14 m)(10 m) = 140 m²
Rounding 140 to the nearest hundredth gives 140.00, so the final answer is:
140.00 square meters.
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Full question:
What is the area of a rectangle with sides of length 10 meters and 14 meters, rounded to the nearest hundredth using the approximation π ≈ 3.14?
the null and alternative hypotheses for a hypothesis test of the difference in two population proportions are: null hypothesis: p 1 equals p 2 alternative hypothesis: p 1 is greater than p 2 notice that the alternative hypothesis is a one-tailed test. suppose proportions ztest method from statsmodels is used to perform the test and the output is (1.13, 0.263). what is the p-value for this hypothesis test? select one.
The p-value for this hypothesis test is 0.263.
In this case, the null and alternative hypotheses for a hypothesis test of the difference in two population proportions are:
null hypothesis: p1 = p2
alternative hypothesis: p1 > p2
Notice that the alternative hypothesis is a one-tailed test.
Suppose proportions z test method from stats models is used to perform the test and the output is (1.13, 0.263).
To find the p-value for this hypothesis test, we need to use the output from the statsmodels function.
The second number in the output is the p-value.
Therefore, the p-value for this hypothesis test is 0.263.
The first number in the output is the z-value, which is not relevant to finding the p-value. Therefore, we can ignore it. Answer: 0.263
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Can someone do step to step for question c please thank u
Answer:
x=-2
Step-by-step explanation:
Convert 75 inches ______yard
Answer:
2.083 yards
Step-by-step explanation:
1 inch ≈ 0.0278 yard
75 inches ≈ 2.083 yards
So, 75 inches is about 2.083 yards.
Answer:
75/36 or 2.083
Step-by-step explanation:
We know that there are 36 inches in a yard so just take 75 inches and divide by 36 and you get 2.083
If a cyclist completes a ride in four hours and 15 minutes with an average
speed of 23 km/h, what distance did he cover? just the answer please
Answer:
covered distance = 97.75 kilometers
Step-by-step explanation:
It's known that:
[tex]speed = \frac{distance}{time}[/tex]
Hence,
[tex]distance = speed\times time[/tex] (*)
Given That:
time = 4.25 hours
speed = 23 km/h
then, by substituting in (*):
[tex]distance = 23 \times 4.25 = 97.75 kilometers[/tex]
hope you find this easy to understand....
Have any questions? Write in the comments.
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MANY POINTS
Proving When a Parallelogram Is a Rectangle
Given: WXYZ is a parallelogram.
ZX = WY
Prove: WXYZ is a rectangle.
The prove that a WXYZ is a parallelogram and WXYZ is a rectangle is given based on the image attached.
What is the proves?To be able to prove that the parallelogram WXYZ is a rectangle, one need to show that it has all the properties of a rectangle. An example of the properties of a rectangle is that it is one that has four right angles.
Hence
From the question, WXYZ is a parallelogram, and ZX = WY.
So to Prove: WXYZ is a rectangle
WZ ≅ XY (opposite sides property)YZ ≅ WX (opposite sides property)<WZY ≅ <ZWX ≅ <WXY ≅ <XYZ = (angle property of a rectangle)<YZW ≅ <WXY (opposite angles are congruent)ΔZYW ≅ ΔXTW (Side-Angle-Side property)ZX ≅ WYTherefore, based on the properties listed above, one can prove that the parallelogram is a rectangle.
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Draw the image of triangle△ABC under a dilation whose center is C and scale factor is 2
The original triangle ABC is down below.
PLEASE HELP
To draw the image of triangle △ABC under a dilation with center C and scale factor 2, we need to draw the original triangle, draw lines from C to each vertex,
To draw the image of triangle △ABC under a dilation with center C and a scale factor of 2, we need to follow a few steps. Firstly, we need to draw the original triangle △ABC. Then, we need to draw a straight line from the center of dilation C to each vertex of the triangle. These lines will act as our guides for where the new vertices will be located.
Next, we need to use the scale factor of 2 to determine the distance between the original vertices and the new vertices. This means that we need to multiply the distance between each vertex and the center of dilation by 2. We can then plot the new vertices along the lines we drew in the previous step.
Finally, we can connect the new vertices to form the image of the triangle under the dilation. This image will be twice as large as the original triangle and will be located in the same direction as the lines we drew from the center of dilation to each vertex.
use the scale factor to determine the new vertex locations, and finally connect the new vertices to form the image.
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(Best Answer gets BrainLiest)
Find the missing value in the table.
The missing value is [??]
Answer:
20
Step-by-step explanation:
You can find this answer multiple ways.
One way is that each y value increases by 5 so following the pattern of 5, 10, 15 the next one would be 20.
Another way is that the the x value is 3 times the y value so we would just have to divide 60 by 3 to get 20.
Answer: 20
Step-by-step explanation:
y is a result of dividing x by 3
15/3 = 5
30/3 = 10
...
60/3 = 20
A mathematics teacher wanted to see the correlation between test scores and homework. The homework grade (x) and test grade (y) are given in the accompanying table. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest tenth. Using this equation, estimate the homework grade, to the nearest integer, for a student with a test grade of 69.
Homework Grade (x) Test Grade (y)
77 64
76 76
60 59
72 57
79 70
79 64
75 77
72 77
The linear regression equation that represents this set of data is y=12x-860
Define linear regressionLinear regression is a statistical method used to model the relationship between two variables by fitting a linear equation to the observed data. The goal of linear regression is to find the best-fitting straight line that represents the relationship between the two variables.
the linear regression equation in the form of y = mx + b, where m is the slope and b is the y-intercept.
Putting the initial values,
x=77
y=64
64=77m+c.......Equation1
Taking second values, we get
x=76
y=76
76=76m+c.......Equation2
Subtracting the Equation 1 from 2, we get
12=m
Putting the value of m=12 in equation 1, we get
c=-860
Hence, The linear regression is y=12x-860
Now, Test grade, x=69
Homework grade, y=12x-860
69=12x-860
69+860=12x
x=77.4
Using this equation, estimate the homework grade is 77.4 for r a student with a test grade of 69.
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working together, it takes two computers 15 minutes to send out a company's email. if it takes the slower computer 35 minutes to do the job on its own, how long will it take the faster computer to do the job on its own? do not do any rounding.
It would take the faster computer 525/20 minutes to do the job on its own.
Let the rate of the faster computer be F and the rate of the slower computer be S. Since they can complete the job together in 15 minutes, we have:
F + S = 1/15
We also know that the slower computer takes 35 minutes to do the job on its own, so:
S = 1/35
Now, we can substitute the value of S into the first equation to solve for F:
F + 1/35 = 1/15
F = 1/15 - 1/35
F = (35 - 15) / (15 * 35)
F = 20 / 525
Therefore, the rate of the faster computer is 20/525. To find how long it takes the faster computer to do the job on its own, we take the reciprocal of this rate:
Time = 1/F = 525/20
So, it would take the faster computer 525/20 minutes to do the job on its own.
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