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vovikov84 [41]
3 years ago
11

I need help with this plz

Mathematics
1 answer:
Sauron [17]3 years ago
6 0
48 c atoms
88 h atoms
44 o atoms
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Find the product of 4cis (pi/4) times 5cis (pi/6) in polar form.
KengaRu [80]

We have the following expression

4\cdot\text{cis(}\frac{\pi}{4})\cdot5\text{cis(}\frac{\pi}{6})

This is equivalent to

4\cdot\text{cis(}\frac{\pi}{4})\cdot5\text{cis(}\frac{\pi}{6})=(4\times5)cis(\frac{\pi}{4}+\frac{\pi}{6})

Since

\frac{\pi}{4}+\frac{\pi}{6}=\frac{6\pi+4\pi}{24}=\frac{10}{24}\pi=\frac{5}{12}\pi

we have that

4\cdot\text{cis(}\frac{\pi}{4})\cdot5\text{cis(}\frac{\pi}{6})=20cis(\frac{5\pi}{12})

Therefore, the answer is the second option from top to bottom.

3 0
1 year ago
If male and female college students work an average of 15 hours per week during the school year and the standard deviation is 5.
ki77a [65]
The variance of hours males spend working is almost two times as large as females. 60% of those females are more likely to work between 12.7 to 17.3 hours while 60% of the males work between 9.6 to 20.3 hours based on one standard deviation.
3 0
4 years ago
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Need answers from smart people
ale4655 [162]
The first one is 6/12 second is 2/10 third is 3/12 fourth is 1/5 fifth one is 3/4
8 0
4 years ago
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PLEASE HELP ME! I REALLY NEED HELP!
Nuetrik [128]

This formula means that a(n) for n, when n is the term number, will give you the term. Meaning, we just have to plug in 55 for n.

a(55) = -1 + 3(55 - 1)

a(55) = -1 + 3 * 54

a(55) = -1 + 162

a(55) = 161

3 0
4 years ago
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Plz help me out wit this ty
Amanda [17]

Answer:

They sold 400 Dollhouses

Step-by-step explanation:

Grab a calculator! It's pretty simple.

Apply 240,000 in the calculator, and divide it by 600! That's it ! You now hvae 400. Thats how many dollhouses they sold!

8 0
3 years ago
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