4 years ago

How does knowing x=52 help you find the value of your?

Mathematics

1 answer:

julsineya [31]4 years ago

8 0

Answer:2

Step-by-step explanation:

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topjm [15]

Answer:

Step-by-step explanation:

split it in half u get a subtract sing makes that (8-4=4)

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3 years ago

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A square has a side length of 2<br>inches. What is the area? What is<br>the perimeter?

nlexa [21]

Answer:

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4 years ago

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If cosx cos(pi/7) + sinx sin(pi/7) = -(sqrt(2))/2, then x can equal...? (Check all that apply) (Will give medal & fan!) A. p

Svetlanka [38]

Answer:

Options B and D

Step-by-step explanation:

Given that

$cos x cos \frac{\pi}{7} +sinx sin \frac{\pi}{7} =\frac{-\sqrt{2} }{2}$

Use the formula for sum angles for Cos as

Cos A cos B +sin A sin B = cos (A-B)

we have

$cos (x-\frac{\pi}{7} ) = \frac{-\sqrt{2} }{2}$

First let us solve principal solution

cos negative in the II quadrant

Hence principal soluton is $\pi-\frac{\pi}{4} =\frac{3\pi}{4}$ + $\frac{\pi}{7}$

Again it is negative in third quadrant i.e. x = $\frac{5\pi}{4}$ + $\frac{\pi}{7}$

General solution is $\frac{5\pi}{4}$ + $\frac{\pi}{7}+2n\pi and\\\\\frac{3\pi}{4}$ + $\frac{\pi}{7}+2n\pi$

Options B and D

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3 years ago

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dmitriy555 [2]

Answer:

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Step-by-step explanation:

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3 years ago

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PolarNik [594]

Answer:

x=6

Step-by-step explanation:

4x+2x=36

Combine like terms

6x=36

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