Solve the systems by elimination.

x -y = 11
5x + 6y = -44

Answer:

22 × 100

(which is 2200)

Step-by-step explanation:

44 × 50 may not look like a problem you can do in your head. But if you notice that there is a 2 in the 44 that you can "move over" to the 50 instead, you totally can do this multiplication in your head.

44 × 50

= 22 × 2 × 50

= 22 × 100

= 2200

Answer:

Step-by-step explanation:

-5

Maker spent $48,000 on a brand-new rolling press. Its value has decreased at a pace of 18% per two years. Seven years after the initial purchase, the rolling press is worth $18,687.53.

We can solve this problem by using the formula for exponential decay:

V = [tex]P * (1 - r)^n[/tex]

where V is the value of the rolling press after n years, P is the initial purchase price, r is the depreciation rate per period, and n is the number of periods.

In this case, we have:

P = $48,000 (the initial purchase price)

r = 18% every 2 years = 0.09 per year (since there are 2 two-year periods in 1 year)

n = 7 years (the number of years that have passed)

These values are entered into the formula to produce the following results:

V = [tex]$48,000 * (1 - 0.09)^7[/tex]

V ≈ $18,687.53

Hence, seven years after the original purchase, the rolling press is now worth roughly $18,687.53.

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Answer:

Step-by-step explanation:

Let's use a Venn diagram to help us visualize the information given in the problem. We can start with three overlapping circles representing Physics (P), Chemistry (C), and Biology (B), and then fill in the numbers given:

                  P

                /   \

               /     \

              /       \

             CP        BP

              \       /

               \     /

                \   /

                  B

We know that 6 students study pure Chemistry, so we can write this number in the circle for Chemistry (C). We also know that 10 students study pure Physics and 8 students study pure Biology, so we can write these numbers in the circles for Physics (P) and Biology (B), respectively:

                  P (10)

                /   \

               /     \

              /       \

        CP (18)       BP (21)

              \       /

               \     /

                \   /

                  B (8)

               C (6)

Now we can use the information given in the problem to fill in the remaining numbers:

22 students study Physics and Biology, so this number goes in the overlap between P and B: PB = 22

21 students study Chemistry and Biology, so this number goes in the overlap between C and B: CB = 21

We don't know the number of students who study Physics and Chemistry only, but we can use the fact that 6 students study pure Chemistry to figure it out. Since 18 students study Chemistry and Physics in total, and 6 of them study pure Chemistry, the remaining 18 - 6 = 12 students must study both Chemistry and Physics but not Biology. We can write this number in the overlap between C and P: CP = 12.

                  P (10)

                /   \

               /     \

              /       \

        CP (12)       BP (21)

              \       /

               \     /

                \   /

                  B (8)

               C (6)

Now we can find the total number of students by adding up all the numbers in the Venn diagram:

Total = P + C + B - (CP + CB + PB) + (CPB)

Total = 10 + 6 + 8 - (12 + 21 + 22) + 0

Total = 19

Therefore, the total number of students in the class is 19.

Answer:

22 problems

Step-by-step explanation:

50% is half of 100, so if 100 divided by 2 is 50, then 11 x 2 is 22. 22 is the answer

Answer:

a) To find the probability that the length of the croaker fish is less than 7 inches, we need to calculate the z-score of 7 inches using the formula:

z = (x - mu) / sigma

where x is the length of the fish we are interested in, mu is the mean length of the population, and sigma is the standard deviation of the population.

In this case, x = 7, mu = 10, and sigma = 2. So the z-score is:

z = (7 - 10) / 2 = -1.5

We can look up the probability of a z-score less than -1.5 in a standard normal distribution table or use a calculator. The probability is approximately 0.0668 or 6.68%.

Therefore, the probability that the length of the croaker fish is less than 7 inches is 0.0668 or 6.68%.

b) To find the probability that the length of the fish is between 7 and 15 inches, we need to calculate the z-scores of 7 inches and 15 inches using the same formula as above:

z1 = (7 - 10) / 2 = -1.5

z2 = (15 - 10) / 2 = 2.5

We can look up the probability of a z-score between -1.5 and 2.5 in a standard normal distribution table or use a calculator. The probability is approximately 0.9332 or 93.32%.

Therefore, the probability that the length of the fish is between 7 and 15 inches is 0.9332 or 93.32%.

Answer:

  19.2

Step-by-step explanation:

You want the solution to 38.4 = 2x.

When you divide both sides of the equation by 2, you will have your answer.

  38.4/2 = (2x)/2

  19.2 = x

The solution to the equation is x = 19.2.

__

Additional comment

When you learned multiplication and division, you learned that each multiplication fact corresponds to two division facts:

  A = B×C . . . . . . . 6 = 2×3

  A/B = C . . . . . . . . 6/2 = 3

  A/C = B . . . . . . . . 6/3 = 2

We use that relationship here to find the value of one of the factors in the product:

  38.4 = 2·x

  38.4/2 = x

The other division fact is still true, but isn't useful here for finding the value of x.

  38.4/x = 2

The vertex of the parabola is (h, k) = (3, -8), The graph in red has vertex (3, -8), thus, the red parabola is correct.

A quadratic function is a polynomial function of the form f(x) = ax² + bx + c, where a, b, and c are constants and a is not equal to 0.

We know that the standard form of the parabola is y=ax²+bx+c. Thus, the vertex form of a parabola is y = a(x-h)² + k, and the vertex is given by (h, k)

here,  y = −(x − (3))² (−8) is already in vertex form.

Then,

h = 3

k = -8

Thus, the vertex of the parabola is (h, k) = (3, -8), The graph in red has vertex (3, -8), thus, the red parabola is correct.

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Complete question:

Which line describes the graph of y = −(x − 3)2 − 8?

The total interest paid by him to the bank would be: Rs. 28,500. Ram should have waited for 3 years, to start his business without borrowing extra loan, until the age of 19.

What is an interest?

Let the sum deposited by Ram at the age of 16 be x.

After compounding for n years, the balance becomes x(1.1)^n.

As per the given condition, we have:

x*[tex](1.1)^{n}[/tex] = 121x

[tex](1.1)^{n}[/tex] = 121

n = 2

So, after two years, Ram's balance became 121 times the initial principal.

After this, he deposited 1/4 of the existing balance, i.e. 1/4 * 121x = 30.25x

After one year of this deposit, the balance becomes 30.25x * 1.2 = 36.3x

So, Ram's total balance at the age of 19 becomes 121x + 36.3x = 157.3x

This is given to be Rs. 359 less than thrice of the initial principal, i.e.

157.3x = 3x - 359

Solving this equation, we get:

x = Rs. 480

So, the sum deposited by Ram at the age of 16 was Rs. 480.

Now, he borrowed Rs. 1,10,000 at 15% p.a. compounded annually.

The interest for the first year would be (15/100) * 1,10,000 = Rs. 16,500

After paying this interest, the remaining balance becomes:

1,10,000 + 16,500 = Rs. 1,26,500

Now, he cleared his debt by paying equal installments in the next 2 years and 1 year.

Let the equal installment be x.

So, the balance after the first year becomes:

1.15x + (1.15)²x + (1.15)³x - x = 1,26,500

Solving this equation, we get:

x = Rs. 45,000

So, Ram paid a total of Rs. 1,35,000 to clear his debt.

The total interest paid by him to the bank would be:

16,500 + 0.15 * 45,000 + 0.15 * 45,000 + 0.15 * 45,000 = Rs. 28,500

To start his business without borrowing extra loan, Ram should have waited for 3 years, until the age of 19, when his balance was Rs. 157.3x = Rs. 75,264. With an interest rate of 20% p.a. simple interest, the balance would become:

75,264 + 0.2 * 75,264 = Rs. 90,316.8

This amount would be sufficient for him to start his business without borrowing extra loan.

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Answer:

Step-by-step explanation:

Equation of a circle:  [tex](x-a)^2+(y-b)^2=r^2[/tex]    with centre [tex](a,b)[/tex], radius [tex]r[/tex].

[tex](x-0)^2+(y+1)^2=4^2[/tex]

[tex]x^2+(y+1)^2=16[/tex]

Buying a car for $2,500 in 1960 would be like buying a car for $539.23 in 2004 dollars .we can solve by using formula by substituting all details along with consumer price index

what is consumer price index ?

The Consumer Price Index (CPI) is a measure of the average change over time in the prices paid by urban consumers for a basket of goods and services. The CPI is often used as an indicator of inflation

In the given question,

To compare the dollar amounts over time, we can use the formula V = (A/S) x (C/C'), where:

V = the current value of the old dollar amount

A = the old dollar amount ($2,500 in this case)

S = the starting year's consumer price index (CPI) for the old dollar amount (1960 CPI)

C = the converting year's CPI (2004 CPI)

C' = the starting year's CPI for the converting year (1960 CPI)

Using the formula, we can calculate the current value of $2,500 in 1960 dollars as:

V = (A/S) x (C/C')

V = (2,500/29.6) x (188.9/29.6)

V = 84.46 x 6.380

V = $539.23

Therefore, buying a car for $2,500 in 1960 would be like buying a car for $539.23 in 2004 dollars.

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Answer: The sum of all the data values divided by the number of data values is 7.

The sequence of the function is -34,-34 -8

In mathematics, the common difference is a term used in arithmetic sequences to refer to the fixed difference between any two consecutive terms in the sequence.

An arithmetic sequence is a sequence of numbers in which each term is obtained by adding a fixed value, called the common difference, to the preceding term.

-34 -21 -8 5 ...

f(1) = -34

f(n) = f(n-1) + [n-2]*13 for n = 2, 3, 4, ...

The common difference between consecutive terms of the sequence is 13.

The first term of the sequence is -34, which is f(1).

To get the nth term of the sequence, we add (n-2)*13 to the (n-1)th term of the sequence.

For example, to get the 2nd term of the sequence, we add (2-2)*13 = 0 to the 1st term, -34, which gives us -34.

To get the 3rd term, we add (3-2)*13 = 13 to the 2nd term, which gives us -21+13 = -8.

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The interest rate would a corporate bond have to offer for Lavonia to be indifferent between the two bonds is 6.35%.

What is an interest rate?

The amount that the lender charges the borrower over and beyond the principal amount is referred to as the interest rate. A person who deposits money in a bank or other financial institution also earns additional income in terms of the recipient, known as interest, taking into account the time value of money.

Here, we have

Given: Assume that Lavonia's marginal tax rate is 20%. If a city of Tampa bond pays 8% interest.

We have to find the interest rate would a corporate bond have to offer for Lavonia to be indifferent between the two bonds.

= Interest rate/(1-Tax rate)

= 5%/(1-0.20)

= 6.25%

Hence, the interest rate would a corporate bond have to offer for Lavonia to be indifferent between the two bonds is 6.35%.

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Answer:

22.8 Inches

Step-by-step explanation:

To find the hypotenuse, the formula is √c=√a^2+b^2

Lets input our values now:

c=√14^2+18^2

Now, let's solve:

c=√196+324

c=√520

The square root of 520 equals about 22.8, so our answer would be 22.8 inches.

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$2100\\ r=rate\to 2\%\to \frac{2}{100}\dotfill &0.02\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &5 \end{cases} \\\\\\ A = 2100\left(1+\frac{0.02}{1}\right)^{1\cdot 5}\implies A=2100(1.02)^5 \implies A \approx 2318.57[/tex]

The answer is right angle with leg 3 and 8.

To use the box method to find the area of the parallelogram, we need to divide it into two triangles. One possible way to do this is by drawing a diagonal from (5, 17) to (18, 9), and creating two triangles with vertices (5, 17), (10, 20), and (18, 9), and (5, 17), (13, 6), and (18, 9).

The length of the diagonal can be found using the distance formula:

d = √[(18 - 5)^2 + (9 - 17)^2]

d = √[(13)^2 + (-8)^2]

d = √(169 + 64)

d = √233

Now, the area of the parallelogram is equal to the product of the length of the diagonal and half the height of the parallelogram. One of the cutouts from the box method will be a right triangle with legs equal to half the height and half the length of the diagonal.

Half the height can be found by taking the difference in y-coordinates between (5, 17) and (18, 9) and dividing by 2:

h = (17 - 9)/2

h = 4

Half the length of the diagonal is:

l = √233/2

Using these values, we can check each of the given right triangles to see which one matches the dimensions of the cutout:

A right triangle with legs 5 and 17 does not match, since the legs should be half the diagonal and half the height.

A right triangle with legs 5 and 8 does not match, since the legs should be half the diagonal and half the height.

A right triangle with legs 8 and 11 does not match, since the legs are not proportional to the dimensions of the parallelogram.

A right triangle with legs 3 and 8 matches, since half the diagonal is approximately 7.66 and half the height is 4, and 3 and 8 are proportional to these values.

Therefore, the correct answer is the right triangle with legs of 3 and 8.

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Answer:

its the middle one ( 8,11)

Step-by-step explanation:

Answer:

Assuming that the dry cleaners, restaurant, and gift shop are all located on a grid, we need to know how many grid lines Pamela crossed to determine how far she walked. Without that information, it's impossible to calculate the distance.

Answer:

Step-by-step explanation:

1●area of shaded region = area of big rectangle -area of small rectangle

=(12×7)-(8×3)

=84-24

=60ft²

2● Area of shaded region =sum of area of all three rectangle

=9×3.5+9×3.5+16×7

=63+112

=175ft²

Answer:

Step-by-step explanation:

Formula of a square Area=[tex]x^{2}[/tex]

1)Area of a Rectangle =l*w

area=(12)(7)

=84 ft

solution for the area non shaded=(8)(3)

= 24 ft

solution for area shaded=84-64

=60 ft

After answering the presented question, we can conclude that As a equation result, the turkey's temperature after 45 minutes is roughly 134.43 Fahrenheit.

In mathematics, an equation is a statement that states the equality of two expressions. An equation consists of two sides separated by an algebraic equation (=). The argument "[tex]2x + 3 = 9,[/tex]" for example, states that the sentence "[tex]2x + 3[/tex]" equals the value "9." The goal of solving equations is to find the value or values of the variable(s) that will allow the equation to be true. Equations can be simple or complex, linear or nonlinear, and contain one or more parts. In the equation "[tex]x2 + 2x - 3 = 0[/tex]," the variable x is raised to the second power. Lines are used in many areas of mathematics, including algebra, calculus, and geometry.

a. [tex]dT/dt=-k(T-Ts)[/tex]

  [tex]-kdt=(DT/(T-Ts)[/tex][tex])[/tex]

When both sides are combined, the following results:

[tex]-kt + C = ln|T - Ts|[/tex]

where C is the integration constant. To calculate C, we can start with the assumption that the turkey is 185 degrees Fahrenheit when it comes out of the oven:

[tex]ln|185 - 75| = -k(0) + C[/tex]

[tex]C = ln(110) (110)[/tex]

As a result, the equation relating the temperature of the turkey to time is:

[tex]-kt+In|T-75|=-kt+In(110)[/tex]

[tex]T=e(-ktIn(110)+75[/tex]

[tex]T=110e(-0.5k)+75[/tex]

[tex]T=110e(-0.75k+75 T134.43[/tex] degrees Fahrenheit

As a result, the turkey's temperature after 45 minutes is roughly 134.43 Fahrenheit.

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The LCD of the given rational function is option B (x²-25)(6x + 30)(6x).

An equation containing one or more rational expressions is referred to as a rational equation. A fraction with polynomials as the numerator and denominator is known as a rational expression. A rational expression is, in other words, the ratio of two polynomials. Finding the LCD (Least Common Denominator) of the fractions, removing the denominators, and then simplifying the resultant equation can be used to solve rational equations. By resolving the resultant equation, which may require factoring, simplification, or the use of other algebraic strategies, the solutions of rational equations can be discovered. In order to simulate complicated systems and events, rational equations are frequently employed in physics, engineering, and other disciplines.

For the given rational equation the LCD will be the multiplication of all the denominators in the given rational equation.

Thus,

(x²-25)(6x + 30)(6x)

Hence, the LCD of the given rational function is option B (x²-25)(6x + 30)(6x).

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Answer:

60°

Step-by-step explanation:

it's one half of an equilateral triangle, all sides equal and angles congruent, sum is 180°, divide by three and you have 60° which is your answer.

The amount of money that the student would saved altogether by paying off the loan in 3 years instead of 4 is $538.48.

To find out how much the student will save by paying off the loan in 3 years instead of 4 years, we will first calculate the monthly payments for each repayment period using the loan payment formula.

P = L x (r(1 + r)^n) / ((1 + r)^n - 1)

P 4years = 9,000 x (0.008333 x (1 + 0.008333)^48) / ((1 + 0.008333)^48 - 1)

P 4years = $228.17

For the 3-year repayment plan:

n = 3 years * 12 months/year = 36 payments

P 3years = 9,000 x (0.008333 x (1 + 0.008333)^36) / ((1 + 0.008333)^36 - 1)

P 3years = $289.28

Savings = Total in 4years - Total in 3years

= $10,952.16 - $10,413.68

=  $538.48

By paying off the loan in 3 years instead of 4 years, the student will save approximately $538.48.

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Given a salary of $14 per hour, the pay for the following day of a weekly time card is $126.

It is the sum of money an employee receives in exchange for the job they perform. A monthly salary, annual salary, or hourly rate are the most common ways to convey it.

Pay = (4 hours x $14/hr) + (5 hours x $14/hr)

      = $126

The wage rate must be increased by the number of hours performed in order to determine the pay for the day.

The wage rate is $14/hr.

A 4 hour morning shift and a 5 hour afternoon shift were performed by the employee. Therefore, the day's salary is calculated using the following formula:

(4 hours x $14/hr) + (5 hours x $14/hr) = $126.

If you round this amount to the nearest hundredth, your total pay will be $126.00.

Monday  08:00  12:00   4hrs  *  $14   $56.00

                12:15    17:30   5hrs * $14    $70.00

                                        Total wages $126.00

It's crucial to maintain precise records of the hours worked each day to make sure the employee is paid correctly.

This covers the hours they arrive at work, leave at the end of the day, and any pauses they take. The employee's salary can then be calculated with accuracy using this information.

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Answer: x=-((y-2)^2)/12 +5

Step-by-step explanation:

Since the directrix is vertical, use the equation of a parabola that opens up or down. Find the vertex.

The probability of no successes in eight trials of a binomial experiment with a probability of success of 7% is 0.6%

Probability is a measure of the likelihood or chance of an event occurring. It is expressed as a number between 0 and 1, where 0 indicates that the event is impossible, and 1 indicates that the event is certain to occur.

Probability can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes. The resulting value represents the likelihood of the event occurring. For example, if a coin is tossed, the probability of it landing heads up is 0.5 (assuming a fair coin), because there is one favorable outcome (heads) out of two possible outcomes (heads or tails).

The probability of no successes in eight trials of a binomial experiment can be calculated using the binomial probability formula:

P(X = 0) = (n choose k) × pᵏ × (1-p)ⁿ⁻ᵏ

where:

n = number of trials = 8

k = number of successes = 0

p = probability of success = 7% = 0.07

Substituting the values in the formula, we get:

P(X = 0) = (8 choose 0) × 0.07⁰ × (1-0.07)⁸⁻⁰

= 1 × 1 × 0.569

= 0.569

Therefore, the probability of no successes in eight trials of a binomial experiment with a probability of success of 7% is 0.6%, rounded to the nearest tenth of a percent.

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To create a histogram of the number of years that each of the nine Omar's Omelette Operation locations has been open, we can start by organizing the data into groups or bins.

A histogram is a graphical representation of a distribution of data, typically shown as bars of different heights. In this case, we can use bins of equal width, such as 1 or 2 years. Then, we can count the number of values that fall into each bin and represent this count as the height of the corresponding bar.

For example, if we use bins of width 2 years, we can group the data into the following bins: [0, 2), [2, 4), [4, 6), [6, 8), [8, 10), and [10, 12). Then, we can count the number of values that fall into each bin and create a bar chart with bars of different heights corresponding to these counts.

The resulting histogram would show the distribution of the number of years that the Omar's Omelette Operation locations have been open, and we could use it to analyze the central tendency, variability, and shape of the data.

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Answer:

He has 68.8% of his drink left

Step-by-step explanation:

do 32 oz - 10 oz = 22 oz to get how much of his drink is left

To get the percentage, just do what left divided by original amount

so 22/32 = 0.6875 and in percent, that is about 68.8%

Answer:

WX=43

Step-by-step explanation:

VY=5y-2

VW=4y

WX=5y-2

YX=4y

VY=a

VW=b

WX=c

YX=d

a+b+c+d=18y-4

P=18y-4

158=18y-4

162=18y

y=9

WX=45-2

WX=43

Answer:

≈ 75,4

Step-by-step explanation:

Given:

A = 452,39

Find: C - ?

First, we need to find the radius:

A = πr^2

πr^2 = 452,39 / : π

r^2 = 452,39/π

r ≈ 12

Now we can find the circumference:

C = 2π × 12 = 24π ≈ 75,4

Step-by-step explanation:

area of circle = 452.39,πr square = 452.39. 3.14r = 452.39 r square = 144 r = 12 cm diameter = 12x2= 24