3 years ago

A survey of 120 teachers determined the following:

Mathematics

1 answer:

son4ous [18]3 years ago

3 0

Answer:

Step-by-step explanation:

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Evaluate this exponential expression.

Levart [38]

Answer:

$(-27)^\dfrac{2}{3}$ = 9

Step-by-step explanation:

Given that,

Asn expression : $(-27)^\dfrac{2}{3}$

We need to evaluate the above expression.

We know that, $(-3)^3=-27$

So,

$(-27)^\dfrac{2}{3}=(-3)^{3\times \dfrac{2}{3}}$

$=(-3)^2\\\\=-3\times -3\\\\=9$

So, the value of $(-27)^\dfrac{2}{3}$ is 9. Hence, the correct option is (b).

8 0

2 years ago

Describe and correct the error in determining wheather (8,11) is a solution of y-x=3

Burka [1]

(8, 11) is the correct solution. x = 8, y = 11

Plug it in:

11-8=3

That's correct.

7 0

2 years ago

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A rectangle has length 2x+3 and width 7x+9. Write a polynomial in standard form that represents the perimeter of the rectangle.

sleet_krkn [62]

Answer:

18x+21

Step-by-step explanation:

First multiply each equation by 2 since there is 2 sides for both the length and width.

2(2x+3) 2(7x+9)

4x+3 14x+18

Then combine like terms

4x+14x 3+18

18x 21

4 0

3 years ago

What is the answer to this?

Alisiya [41]

Answer:

i think it was -(1/3)

Step-by-step explanation:

5 0

3 years ago

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PLEASE HELP ASAP 50 POINTS BRAINLIEST IF CORRECT

beks73 [17]

I think the answer is B

7 0

2 years ago

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