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3 years ago

I got the answer but it's not a choice???

Mathematics

1 answer:

MaRussiya [10]3 years ago

4 0

Notify your teacher and make sure you check your answer. Like a lot.
Use the calculator even. Go online ask google.
But I guess I can help you out with this one. If my math is correct it is.
D. $492.75

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Select all the expressions that could represent the volume of a box, which is a third degree polynomial in variables x and y.

Citrus2011 [14]

Answer:

A and D

Step-by-step explanation:

Third degree polynomials refers to polynomials that has 3 as the greatest power of the variable.

A. 3 x y − 3 x y^2

Degree = 1 + 2 = 3

This option is correct

B 2y - xy^3 + 7

Degree = 1 + 3 = 4

This option is wrong

C. 3x^3y^2 -3x^2y + 10y^2 - 10y

Degree = 3 + 2 = 5

This option is wrong

D. 3x^2y+5xy

Degree = 2 + 1 = 3

This option is correct

E. 3y^3 + 3x^3 y^4

Degree = 3 + 4 = 7

This option is wrong

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3 years ago

An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Write an equation to model the si

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Step-by-step explanation:

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Does anyone know the question?

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3 years ago

Parker earns $4 in rewards for every $75 he spends at the grocery store. If he earned $44 in rewards last month. how much did he

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he spent $825 at the store

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Javier bought a microwave for $105.The cost was 30% off the original price.what was the price of the microwave before the sale

tatuchka [14]

Answer:

$ 150

Step-by-step explanation:

Given:

Cost price of a microwave = $105

Discount % = 30

Question asked:

what was the price of the microwave before sale = ?

Solution:

Let the price of the microwave before sale = $x$

Price before sale - 30 % discount = cost price of microwave (by Javier)

$x - 30\% of x = 105$

$x - \frac{30x}{100} = 105$

$\frac{70x}{100} = 105\\$

Multiplying both side by 100

$70x = 105 \times 100$

$70x = 10500$

Dividing both side by 70

$x = \frac{10500}{70} \\x = 150$

x = price of the microwave before sale = $ 150

Thus, price of the microwave before the sale = $150

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3 years ago