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2 years ago

I will give brainiest to whoever answers correctly !!

Mathematics

1 answer:

lys-0071 [83]2 years ago

7 0

Answer is five thousand

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Simplify and solve for x 5 (x + 20) = 7x + 30

yarga [219]

Answer:

x = 35

Step-by-step explanation:

5(x + 20) = 7x + 30

Distribute the 5 on the left side by multiplying 5 by the two terms, x and 20.

5x + 100 = 7x + 30

Subtract 7x from both sides.

-2x + 100 = 30

Subtract 100 from both sides.

-2x = -70

Divide both sides by -2.

x = 35

4 0

2 years ago

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8. y 5 х -5 Ut --5 slope = Please help me

Burka [1]

Go choose the one you think

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2 years ago

38. For the following exercises, sketch a line with the given features.

zhannawk [14.2K]

Answer:

see image

Step-by-step explanation:

The x-intercept is the point where the line crosses the x-axis (horizontal, left and right line with numbers, arrows at both ends, usually marked x at the right end)

The y-intercept is where your line crosses the y-axis (vertical, up-and-down line with numbers, arrows at the ends, usually marked y at the top)

Two points determine a line.

Draw a line through the two points given. See image.

3 0

1 year ago

Simplify using trigonometric identities 2sinθ - sin2θ cosθ

Anit [1.1K]

Double angle identity for sine:

$\sin(2x) = 2 \sin(x) \cos(x)$

$\implies 2 \sin(\theta) - \sin(2\theta) \cos(\theta) = 2 \sin(\theta) - 2 \sin(\theta) \cos^2(\theta)$

Factorize the left side.

$2 \sin(\theta) - 2 \sin(\theta) \cos^2(\theta) = 2 \sin(\theta) \left(1 - \cos^2(\theta)\right)$

Pythagorean identity:

$\cos^2(x) + \sin^2(x) = 1$

$\implies 2 \sin(\theta) \left(1 - \cos^2(\theta)\right) = 2 \sin^3(\theta)$

so that

$\boxed{2 \sin(\theta) - \sin(2\theta) \cos(\theta) = 2 \sin^3(\theta)}$

8 0

1 year ago

If f(x)=3x+5/x, what is f9a+2) A. 3(a+2)+8/a+2 B. 3(f(a))+5/f(a)+2 C. 3a+5/a+2

stira [4]

Answer:

Step-by-step explanation:

7 0

3 years ago

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