3 years ago

Solve the system by Substitution

Mathematics

1 answer:

dusya [7]3 years ago

4 0

Answer:

(-1,0)

Step-by-step explanation:

I used a graphing calculator and that is the solution

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Each small cube is 1 in³. The length of the large cube is 14 in.

MaRussiya [10]

The answer is b
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3 years ago

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Find the critical numbers of the function. (Enter your answers as a comma-separated list. Use n to denote any arbitrary integer

lyudmila [28]

$f(\theta)=10\cos\theta+5\sin^2\theta$

then the derivative is

$f'(\theta)=-10\sin\theta+10\sin\theta\cos\theta$

Critical points occur where $f'(\theta)=0$ . This happens for

$-10\sin\theta+10\sin\theta\cos\theta=0$

$-10\sin\theta(1-\cos\theta)=0$

$\implies-10\sin\theta=0\text{ or }1-\cos\theta=0$

In the first case, we find

$-10\sin\theta=0\implies\sin\theta=0\implies\theta=n\pi$

In the second,

$1-\cos\theta=0\implies\cos\theta=1\implies\theta=2n\pi$

So all the critical points occur at multiples of $\pi$ , or $n\pi$ . (This includes all the even multiples of $\pi$ .)

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3 years ago

At the beginning of the month, Lily has $4,578. By the end of the month, she only has $947 left over. How much money did she spe

alisha [4.7K]

3631 because 4578 - 947 = 3631

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3 years ago

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Select the correct answer.

jenyasd209 [6]

Answer:

I think it is B it is my guss

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3 years ago

PLEASE HELP, WILL MARK BRAINLIEST!<br><br> 7/9x +2 = 5/6

harina [27]

Answer:

Exact Form:

x= -3/2

Decimal Form:

x= -1.5

Mixed Number Form

x= -1 1/2

Step-by-step explanation:

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