3 years ago

I need help with 1-8.

1 answer:

RSB [31]3 years ago

4 0

Devide them all by 2

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coldgirl [10]

Answer:

9x^2+34x+21

Step-by-step explanation:

distribute all the numbers

3 0

3 years ago

icang [17]

We know: The sum of the measures of the angles of a triangle is equal 180°.

We have: m∠A =65°, m∠B = (3x - 10)° and m∠C = (2x)°.

The equation:

65 + (3x - 10) + 2x = 180

(3x + 2x) + (65 - 10) = 180

5x + 55 = 180 <em>subtract 55 from both sides</em>

5x = 125 <em>divide both sides by 5</em>

x = 25

m∠B = (3x - 10)° → m∠B = (3 · 25 - 10)° = (75 - 10)° = 65°

m∠C = (2x)° → m∠C = (2 · 25)° = 50°

<h3>Answer: x = 25, m∠B = 65°, m∠C = 50°</h3>

8 0

3 years ago

Alex787 [66]

2 - 12 + 18
= -10 + 18
= 8
The answer is D.

4 0

3 years ago

slega [8]

The height of the cylinder

4 0

2 years ago

Gennadij [26K]

This is a screen shot of an online calculator called mathportal.com it shows the work used to find the answer to this question

Hope this helped and have an amazing day :)

-yO mAmA

5 0

3 years ago