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3 years ago

How are the step by step math problem suppose to be for this math problem (-2-8)^2?

Mathematics

1 answer:

Sidana [21]3 years ago

6 0

Answer:

the answer is 100

Step-by-step explanation:

(-2-8)^2

(-2-8)(-2-8)

-2(-2-8)-8(-2-8)

4+16+16+64

20+80

100

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Sharon needs 3 pounds of turkey for every 2 people that are attending her dinner party. Pounds of Turkey Number of People How ma

MArishka [77]

Answer:

10 People

Step-by-step explanation:

5 0

3 years ago

If 180°<α<270°, cos ⁡α= −8/17, 270°<β<360°, and sin β= −4/5, what is sin⁡(α+β)?

mars1129 [50]

Answer:

$\sin(\alpha+\beta) = -0.153$

Step-by-step explanation:

Let determine the angles behind each trigonometric expression:

$\cos \alpha = -\frac{8}{17}$

$\alpha = \cos^{-1}\left(-\frac{8}{17} \right)$

Given that $180^{\circ}< \alpha < 270^{\circ}$ , the value of $\alpha$ is:

$\alpha \approx 241.928^{\circ}$

$\sin \beta = -\frac{4}{5}$

$\beta = \sin^{-1}\left(-\frac{4}{5} \right)$

Given that $270^{\circ}< \beta$ , the value of $\beta$ is:

$\beta \approx 306.870^{\circ}$

The sine function of the sum of angles can be determined by the following identity:

$\sin(\alpha + \beta)=\sin \alpha \cdot \cos \beta + \sin \beta \cdot \cos \alpha$

If $\alpha \approx 241.928^{\circ}$ and $\beta \approx 306.870^{\circ}$ , then:

$\sin (241.928^{\circ}+306.870^{\circ}) = (\sin 241.928^{\circ}) \cdot (\cos 306.870^{\circ}) + (\sin 306.870^{\circ})\cdot (\cos 241.928^{\circ})$ $\sin(241.928^{\circ}+306.870^{\circ}) = -0.153$

7 0

4 years ago

How much wood $700 be worth after eight years if they were invested at 5% interest compounded Continuously

Zolol [24]

Hi there

The formula is
A=pe^rt
A future value?
P present value 700
R interest rate 0.05
T time 8 years

A=700×e^(0.05×8)
A=1,044.28

Hope it helps

7 0

3 years ago

Palace help me solve these two equations 14, 15

IrinaVladis [17]

14)

check the picture below... so.. is just a semi-circle and a rectangle, nothing fancy, get their area, sum them up.

15)

so... the voter turnout, is referring to, what's the percentage that voted, which year has the highest percentage... well, we simply check the percentage of the value provided from the total eligible voters, keeping in mind that, all eligible voters are the 100%

so.. for 1944

$\bf \begin{array}{ccllll}
amount&\%\\
------&----\\
86,607,000&100\\
47,976,670&x\\
\end{array}\implies \cfrac{86,607,000}{47,976,670}=\cfrac{100}{x}
\\\\\\
x=\cfrac{100\cdot 47,976,670}{86,607,000}\implies x\approx 55.39583405498$

for 1984

$\bf \begin{array}{ccllll}
amount&\%\\
-----&-----\\
167,727,000&100\\
92,659,000&x
\end{array}\implies \cfrac{167,727,000}{92,659,000}=\cfrac{100}{x}
\\\\\\
x=\cfrac{100\cdot 92,659,000}{167,727,000}\implies x\approx 55.2439380660239$

5 0

3 years ago

Anyone want a brainlyest? U gotta earn it.

Vesna [10]

S-t-upid people everywhere

They make me want to pull your hair

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But all the others are just fools

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This cycle is getting me nowhere

At night I close my eyes and dream

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Emptiness surrounds this hole

Of what? Well I don’t really know

6 0

3 years ago

Read 2 more answers