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3 years ago

8th grade math, please help.

Mathematics

1 answer:

Anastasy [175]3 years ago

5 0

Answer:

V = 15/4π = 3.75π

Step-by-step explanation:

V=πr^2h

V=π(1/2^2)15

V=π(1/4)15

V=15/4π

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3 years ago

Segment BD is an altitude of triangle ABC. Find the area of the triangle.

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Answer: The correct option is A, i.e., 7.5.

Explanation:

It is given that ABC is a triangle and BD is an altitude.

Since BD is an altitude, therefore the height of the triangle is BD and the base of the triangle is AC.

The distance formula to find the distance between two points is,

$D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

First, we find BD, where B(-1,4) and D(2,4).

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So, the height of the triangle is 3.

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So, the base of the triangle is 5.

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What is the solution to the equation?

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D. x=−4
Why?
Let's solve your equation step-by-step.
2(x−7)=10x+18
Simplify both sides of the equation.
2(x−7)=10x+18
Simplify:
2x−14=10x+18
Subtract 10x from both sides.
2x−14−10x=10x+18−10x
−8x−14=18
Add 14 to both sides.
−8x−14+14=18+14
−8x=32
Divide both sides by -8.
−8x−8=32−8
D. x=−4

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