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3 years ago

Which expression is equivalent to the given expression. -2x + 8x-9+4x+7x+2

Mathematics

1 answer:

Alinara [238K]3 years ago

5 0

Answer:

17x - 7

Step-by-step explanation:

-2x + 8x - 9 + 4x + 7x + 2

6x - 9 + 4x + 7x + 2

6x - 9 + 11x + 2

17x - 9 + 2

17x - 7

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3 years ago

What’s 6 (3x + 5) please

olga nikolaevna [1]

6(3x+5)

6*3x=18x

6*5=30

<u>18x+30</u> is your answer! I hope this helped! :)

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3 years ago

I need help understanding square roots

Vlad [161]

I wonder if you mean to write $\sqrt[3]{256}$ in place of $3\sqrt{256}$ ...

If you meant what you wrote, then we have

$\sqrt{256}=\sqrt{16^2}=16$

$3\sqrt{256}=3\cdot16=48$

If you meant to write $\sqrt[3]{256}$ (the cube root of 256), then we could go on to have

$\sqrt[3]{256}=\sqrt[3]{16^2}=\sqrt[3]{(4^2)^2}=\sqrt[3]{4^4}=\sqrt[3]{4^3\cdot4}=4\sqrt[3]4$

6 0

3 years ago

Write the following expression using a single exponent. 3-5 × 36 A. 30 B. 3-11 C. 31 D. 3-30

fiasKO [112]

Answer:

3^1

Step-by-step explanation:

3^-5 * 3^6

When multiplying exponents with the same base, we can add the exponents

3^ ( -5+6)

3^1

7 0

3 years ago

Find the value of each variable so that PQRS is a parallelogram. Explain what allows you to do this.

Nataly [62]

Answer:

$x = 5$

$y = 16$

Step-by-step explanation:

Given

See attachment for parallelogram

Required

Find variables x and y

Solving for x, we have:

$5x = 25$ ---- Opposite sides of a parallelogram

$\frac{5x}{5} = \frac{25}{5}$ ------ Divide both sides by 5

$x = 5$

Solving for y, we have:

$3y - 1 = 47$ ---- Opposite sides of a parallelogram

$3y = 1 + 47$ ------ Collect like terms

$3y = 48$

$\frac{3y}{3} = \frac{48}{3}$ ---- Divide both sides by 3

$y = 16$

4 0

3 years ago