Approximately when where there 500 gallons of water in the pool

Mathematics

1 answer:

maw [93]3 years ago

3 0

look it up

Step-by-step explanation:

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erik [133]

$2.=c.\\\\2\sin4x\cos4x=2\sin(2\cdot4x)=2\sin8x\\\\Used:\\\sin2\alpha=2\sin\alpha\cos\alpha$

$1.=b.\\\\\csc x-\sin x=\dfrac{1}{\sin x}-\dfrac{\sin^2x}{\sin x}=\dfrac{1-\sin^2x}{\sin x}=\dfrac{\cos^2x}{\sin x}\\\\=\dfrac{\cos x\cos x}{\sin x}=\cos x\cdot\dfrac{\cos x}{\sin x}=\cos x\cot x\\\\Used:\\\csc x=\dfrac{1}{\sin x}\\\\\sin^2x+\cos^2x=1\to\cos^2x=1-\sin^2x\\\\\cot x=\dfrac{\cos x}{\sin x}$

$3.=a.\\\\\dfrac{\sin x-1}{\sin x+1}=\dfrac{\sin x-1}{\sin x+1}\cdot\dfrac{\sin x+1}{\sin x+1}=\dfrac{\sin^2x-1^2}{(\sin x+1)^2}=\dfrac{\sin^2x-1}{(\sin x+1)^2}\\\\=\dfrac{-(1-\sin^2x)}{(\sin x+1)^2}=\dfrac{-\cos^2x}{(\sin x+1)^2}\\\\Used:\\(a-b)(a+b)=a^2-b^2\\\\\sin^2x+\cos^2x=1\to \cos^2x=1-\sin^2x$

8 0

3 years ago

PLEASE HELP QUICK. WILL GIVE BRAINLEIST.

Vedmedyk [2.9K]

Answer: B. 34

Step-by-step explanation:

3 0

3 years ago

What is the answer to 7-3(x+6)=7-4x

Sladkaya [172]

The solution to your question is x=9

6 0

3 years ago

Read 2 more answers

Amy has 12 pairs of white socks, 2 pairs of gray socks, and 6 pairs of black socks in her drawer. if she takes two pairs without

KIM [24]

HI!
First of all, there are total 12 + 2 + 6 = 20 pairs of socks.
Probability of getting a pair of white socks the first time is 12/20.
Probability of getting a pair of gray socks without replacement, if first one was white, is 2/19
Therefore the probability t<span>hat she will take a white pair and gray pair</span> without replacement is 6/95 (I multiplied the two probabilities)
Let me know if there are any other questions!

4 0

4 years ago

<img src="https://tex.z-dn.net/?f=%283x%20-%201%29%28x%20%2B%205%29%20%3D%204x%20%2B%203" id="TexFormula1" title="(3x - 1)(x + 5

sweet [91]

Answer: x = $\frac{2}{3}$ , or in decimal form x = -4

Step-by-step explanation:

* Hopefully the work helps below:) Mark me the brainliest:)!!!

7 0

3 years ago