3 years ago

4 Which ratio is proportional to 5:8 or 5/8 5 40/20 10/24 15/24 100/140

Mathematics

2 answers:

Nady [450]3 years ago

4 0

Multiply the top and bottom by 3. The answer is 15/24

VikaD [51]3 years ago

4 0

Step-by-step explanation:

Cancel 15/24 by 3 you'll get your solution.

hope it helps

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3 years ago

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.

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1 year ago

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3 years ago

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Rashid [163]

Answer:

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Step-by-step explanation:

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