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3 years ago

8

1) what is the answer to 5(3x-2y)+2(x+2y)-3(3x-2y)?

1 answer:

vichka [17]3 years ago

4 0

So first we want to distribute. (#1)

So, using the distributive property, we can:

5 * 3x - 2y * 5 + 2x + 2 * 2y - 3 * 3x - 3 * 2y

or

15x - 10y + 2x + 4y - 9x - 6y

Now just combine like terms

8x -12y

So for #1 it should be a.

#2: 2x - 3 + 3x - 5

Combine Like Terms:

2x + 3x - 3 - 5

5x - 8

So it should be b.

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Answer below

Step-by-step explanation:

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3 years ago

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Factor this expression completely.<br><br> u^3 - v^3

Musya8 [376]

Completely factored form of u^3-v^3 is:

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Step-by-step explanation:

Algebraic formulas are used to factorize the expression.

Given

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The formula involving cube with negative sign is:

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3 years ago

In 10 words or less, explain what it means for two segments to be parallel.

ArbitrLikvidat [17]

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Step-by-step explanation:

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2 years ago

Subtract. Express your answer in lowest terms. 10 5/11 - 4 2/11

Zigmanuir [339]

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Step-by-step explanation:

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3 years ago

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sladkih [1.3K]

Answer:

$\textsf{Area of a sector (angle in degrees)}=\dfrac{\theta}{360 \textdegree}\pi r^2$

$\textsf{Area of a sector (angle in radians)}=\dfrac12r^2\theta$

17) Given:

$\theta$ = 240°
r = 16 ft

$\textsf{Area of a sector}=\dfrac{240}{360}\pi \cdot 16^2=\dfrac{512}{3}\pi \textsf{ ft}^2$

19) Given:

$\theta=\dfrac{3 \pi}{2}$
r = 14 cm

$\textsf{Area of a sector}=\dfrac12\cdot14^2 \cdot \dfrac{3\pi}{2}=147 \pi \textsf{ cm}^2$

21) Given:

$\theta=\dfrac{ \pi}{2}$
r = 10 mi

$\textsf{Area of a sector}=\dfrac12\cdot10^2 \cdot \dfrac{\pi}{2}=25 \pi \textsf{ mi}^2$

23) Given:

$\theta$ = 60°
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2 years ago