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Brums [2.3K]
2 years ago
7

The perimter of a recrangle is 36 the ratio of the legnths of the sides i 2:7 what are the lengths of the sides

Mathematics
1 answer:
Phoenix [80]2 years ago
5 0
2 (l + w) = 36
l + w = 18
2x + 7x = 18
9x = 18
x = 2

the length of the sides
l = 2x
l = 2(2)
l = 4

w = 7x
w = 7(2)
w = 14
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option 1 drop down are: even-odd identity, quotient identity, Pythagorean identity, double-number identity.option 2 drop down ar
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Answer:

The equation is given below as

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Step 1:

We will work on the left-hand side, we will have

\begin{gathered} \cos x-\sin x\tan x \\ \text{recall that,} \\ Quoitent\text{ identity is} \\ \tan x=\frac{\sin x}{\cos x} \end{gathered}

By substituting the identity above, we will have

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Here, we will make use of the quotient identity

Step 2:

By writings an expression, we will have

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Here, we will use the definition of subtraction

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Step 3:

We will apply the double number identity given below

\begin{gathered} \cos 2\theta=\cos (\theta+\theta)=\cos ^2\theta-\sin ^2\theta \\ \cos 2x=cos(x+x)=\cos ^2x-\sin ^2x \end{gathered}

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5 0
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I beg you help me plz
Neporo4naja [7]

Step-by-step explanation:

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Step-by-step explanation:

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