Find the missing height, when you know the area of the rectangle 9+9+?+?=126

Mathematics

2 answers:

crimeas [40]4 years ago

7 0

Answer:

Step-by-step explanation:

1. 126 - (9 + 9) = 108

2. 108 ÷ 2 = 54

frutty [35]4 years ago

6 0

Answer:

Step-by-step explanation:I don't say u must have to mark my ans as brainliest but if it has really helped you plz don't forget to thank me...

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Cqn someone answer this?

Norma-Jean [14]

Answer:

-3

Step-by-step explanation:

-11/2+27/4+(-17/4)
(-22+27-17)/4
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3 years ago

Read 2 more answers

(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x

Aliun [14]

As

$\tan x=\dfrac{\sin x}{\cos x}$
$\cot x=\dfrac{\cos x}{\sin x}$

we have

$\sin x(\tan x\cos x-\cot x\cos x)=\sin x\left(\sin x-\dfrac{\cos^2x}{\sin x}\right)=\sin^2x-\cos^2x$

Recalling that $\cos2x=\cos^2x-\sin^2x$ , we end up with

$-\cos2x=1-2\cos2x$
$1=\cos2x$
$\implies2x=2n\pi$

(where $n$ is any integer)

$\implies x=n\pi$