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3 years ago

15 percent converted to a simply fractin work it a out if your gonna answer

Mathematics

1 answer:

Elza [17]3 years ago

5 0

All percents are out of 100 so start with 15/100 and then simplify

3/20

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What fraction of an inch is 1 cm

GarryVolchara [31]

Answer:

The answer is .393. Hope this helps.

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3 years ago

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What is the area of the parallelogram?

madreJ [45]

Answer:

60 in²

Step-by-step explanation:

Area = base × height

= 15×4 = 60in²

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3 years ago

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Simplify: cos2x-cos4 all over sin2x + sin 4x

GrogVix [38]

Answer:

$\frac{\cos\left(2x\right)-\cos\left(4x\right)}{\sin\left(2x\right)+\sin\left(4x\right)}=\tan\left(x\right)$

Step-by-step explanation:

$\frac{\cos\left(2x\right)-\cos\left(4x\right)}{\sin\left(2x\right)+\sin\left(4x\right)}$

Apply formula:

$\cos\left(A\right)-\cos\left(B\right)=-2\cdot\sin\left(\frac{A+B}{2}\right)\cdot\sin\left(\frac{A-B}{2}\right)$ and

$\sin\left(A\right)+\sin\left(B\right)=2\cdot\sin\left(\frac{A+B}{2}\right)\cdot\sin\left(\frac{A-B}{2}\right)$

We get:

$=\frac{-2\cdot\sin\left(\frac{2x+4x}{2}\right)\cdot\sin\left(\frac{2x-4x}{2}\right)}{2\cdot\sin\left(\frac{2x+4x}{2}\right)\cdot\cos\left(\frac{2x-4x}{2}\right)}$

$=\frac{-\sin\left(\frac{2x-4x}{2}\right)}{\cos\left(\frac{2x-4x}{2}\right)}$

$=\frac{-\sin\left(\frac{-2x}{2}\right)}{\cos\left(\frac{-2x}{2}\right)}$

$=\frac{-\sin\left(-x\right)}{\cos\left(-x\right)}$

$=\frac{-\cdot-\sin\left(x\right)}{\cos\left(x\right)}$

$=\frac{\sin\left(x\right)}{\cos\left(x\right)}$

$=\tan\left(x\right)$

Hence final answer is

$\frac{\cos\left(2x\right)-\cos\left(4x\right)}{\sin\left(2x\right)+\sin\left(4x\right)}=\tan\left(x\right)$

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3 years ago

Photo attached. Thanks in advance!

jonny [76]

A zero in front of the x would make this a difference of two perfect squares. All of the other option would interfere by adding another term.

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3 years ago

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Samantha invited 30 friend to her birthday party. If 2 out of 3 friend invited came to the birthday party, how many friends came

lord [1]

Answer:

20 people

Step-by-step explanation:

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3 years ago

15 percent converted to a simply fractin work it a out if your gonna answer​

15 percent converted to a simply fractin work it a out if your gonna answer