Mathematics High School

Suppose that a piano costs $5,000 and loses 20% of its value each year. What will be the value of the piano after 16 years? A. $219.90 B. $274.88 C. $140.74 D. $175.92

Answers

Answer 1
The answer is c 140.74 bucks or pound
Answer 2

Based on the information given will be the value of the piano after 16 years is : C. $140.74.

Using this formula

Time=Principal(1-rate)^n

Where:

Principal=$5,000

Rate=20%

Number of year=16 years

Let plug in the formula

Time=5,000(1-0.20)^16

Time=5,000(.80)^16

Time=$140.737

Time= $140.74 (Approximately)

Inconclusion  the value of the piano after 16 years is : C. $140.74.

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Given: x = 11 when y = 99. If y varies directly as x, find x when y= 144

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Answer:

x=16

Step-by-step explanation:

11×9=99, so variaton is 9x=y. that means y=x/9

144/9=16

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Step-by-step explanation:

Given

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Interchanging the roles of x and y we get

x = y + 5

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Answer:

A

Step-by-step explanation:


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explanation - i did this

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Answer:

4

Step-by-step explanation:

represent the number he thought of with x

[tex] \frac{7}{2} x + 16 = 30[/tex]

multiply through with the LCM which is 2[tex]2 \times \frac{7}{2}x + 16 \times 2 = 30 \times 2 [/tex][tex]7x + 32 = 60 [/tex][tex]7x = 60 - 32[/tex][tex]7x = 28[/tex][tex] \frac{7x}{7} = \frac{28}{7} [/tex][tex]x = 4[/tex]

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Answer:

y = 4

Step-by-step explanation:

20 = 5y

then divide both side by 5

20 ÷ 5 = 4

so y is 4

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Answers + Explanation:

1. x + 7 =10

if you know some number + 7 is 10, you know that number must be 3.

so, x = 3

the other way you can solve this would be:

x + 7 = 10

subtract 7 from both sides of the equation

x + 7 - 7 = 10 - 7

x = 3

2. Use the same strategy:

x - 8 = -5

add 8 to both sides of the equation

x - 8 + 8 = -5 + 8

x = 3

3. x + 3 = 6

subtract 3 from both sides of the equation

x + 3 - 3 = 6 - 3

x = 3

4. x + 6 = 3

subtract 6 from both sides of the equation

x + 6 - 6 = 3 - 6

x = -3

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Answer:

350

Step-by-step explanation:

Answer:

C. 350 pounds

Step-by-step explanation:

Looking at the chart, week 22 would be between the week 20 and week 25 marks. As a result, the weight should be between 275 and 425 pounds. As a result, A is out. Week 22 will be bigger than week 20 (275), so B is also out. Week 22 is in between Week 20 and 25, so it isn't bigger than Week 25's pumpkin; D is out for this reason. That leaves C, 350 pounds, as our answer.

Penny makes 5 liters of applesauce. She saves 0.92 liter for dinner and puts the rest in jars. If each jar holds 0.68 liter, how many jars can she fill? Penny can fill jars.

Answers

01921

Step-by-step explanation:

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Answer:

The answer is 56

Step-by-step explanation:

180-124=56

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Answer:

Step one

Step-by-step explanation:

she forgot to do -4×-3 in the parentheses

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Solve problem using substitution
2x + y = 10
y = x + 1

Answers

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form: (3,4)

Equation Form:
x=3, y=4

Answer:

x = 3

y = 4

Step-by-step explanation:

2x +  y = 10          -----------------(I)

     y = x + 1 ---------------------(II)

Substitute y = x + 1 in equation (I)

2x + x + 1 = 10    {Combine like terms}

      3x + 1 = 10         {Subtract 1 from both sides}

             3x = 10 -1

             3x = 9 {Divide both sides by 3}

                x = 9/3

x = 3

Plugin x = 3 in equation (II)

y = 3 + 1

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Step-by-step explanation:

if u mean (x^3 -6x^2 -x- 6) then the answer is C

(6,-1,1)

..................,..........

but if u mean P(x) = x3 – 6x2 – x +62

then the answer is None of the above

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4.361+1.9328i

4.361+1.9328i

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Answer:

D

Step-by-step explanation:

Answer:

ITS D

Step-by-step explanation:

A monomial only has one number. Mono meaning 1.

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Answers

Answer:

A circle is centered at the point (-3,2) and passes through the point (1,5). The radius of the circle is (5 ) units. the point (-7, -1) and point (-7, 5) lies in this circle.

Step-by-step explanation:

equation of circle is

(X-center_X)^2 + (y-center_Y)^2 = r^2

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--|--|--*--|--|--|--|--|--|--|--|

 0 1 2 3 4 5 6 7 8 9 10

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you would put a closed dot on 2 and make a line going right

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Answer:

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Step-by-step explanation:

Given the x- intercepts are x = 3 and x = - 5 then the corresponding factors are

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