3 years ago

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!

Mathematics

1 answer:

anastassius [24]3 years ago

8 0

X = 0
X=- 3 1/3 or x= -3.3

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I need help with these 2 problems. Please and thank you :)

dsp73

Answer:

2,8

Step-by-step explanation:

the upper arrow goes down just like the other one so which every number you see its on go to that number and look up im at explaining but that is the answer for the 1st page

7 0

2 years ago

Pls help i will mark brainlyest

Sergeeva-Olga [200]

Answer:

∠b=82°

Step-by-step explanation:

143°=∠c+∠b (exterior angle property)

143°=61°+∠b

∠b=143-61

∠b=82°

4 0

2 years ago

(1+cos2x)/(1-cos2x) = cot^2x

sesenic [268]

We will turn the left side into the right side.

$\dfrac{1 + \cos 2x}{1 - \cos2x} = \cot^2 x$

Use the identity:

$\cos 2x = \cos^2 x - \sin^2 x$

$\dfrac{1 + \cos^2 x - \sin^2 x}{1 - ( \cos^2 x - \sin^2 x)} = \cot^2 x$

$\dfrac{1 - \sin^2 x + \cos^2 x }{1 - \cos^2 x + \sin^2 x} = \cot^2 x$

Now use the identity

$\sin^2 x + \cos^2 x = 1$ solved for sin^2 x and for cos^2 x.

$\dfrac{\cos^2 x + \cos^2 x }{\sin^2 x + \sin^2 x} = \cot^2 x$

$\dfrac{2\cos^2 x}{2\sin^2 x} = \cot^2 x$

$\dfrac{\cos^2 x}{\sin^2 x} = \cot^2 x$

$\cot^2 x = \cot^2 x$

8 0

3 years ago

The perimeter of a rectangular pool is 304 m. if the length of the pool is 81 m, what is its width?

marta [7]

Answer:

perimeter=2(L+W)

304=2(81+W)

Step-by-step explanation:

304=162+2W.2W=304-162.2W=142\2=71

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1 year ago

What is m∠1 if m∠7 = 60°?

inna [77]

Step-by-step explanation:

95vxgr Tu fjvgzgvkvgshvysrvv

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3 years ago