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vladimir2022 [97]
3 years ago
14

Simplify the expression: 9a – 7a + 4 – 4 + 8

Mathematics
1 answer:
Ksju [112]3 years ago
8 0

Answer:

2a + 8

Step-by-step explanation:

9a - 7a + 4 - 4 + 8

=> 2a + 12 - 4

=> 2a + 8

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What is the value of x?<br> please help!!
Lesechka [4]

Answer:

28°

Step-by-step explanation:

soln

(x+3)°+(2x+3)°

x°+3°+2x°+3°=90°(beign complementary angles)

3x+6=90°

3x=90°_6

3x=84

x=84/3

x=28°

4 0
4 years ago
Read 2 more answers
You people in the Algebra 1 course for high school, Are you guys ready for the exams next week? I'm definitely not. Anyway, A ba
Anvisha [2.4K]

Answer:

I think that it D

Step-by-step explanation:

C= .07=70%. So I know that it is not C

A= 30% but the question doesn't even have a 3 in it, so therefore it cannot be A.

B= Is basically the same concept as A. There is no .3 or 3 peroid.

So I say D

4 0
3 years ago
(0, -2) is a solution of the equation 2x - 3y = 6. true or false
lisov135 [29]

Answer:

It is a solution of the ordered pair.

Step-by-step explanation:

The y intercept is (0,-2)

5 0
3 years ago
Membership at the Universal Fitness Gym offers yearly memberships for $275. Yoga classes cost an additional $5 per class. Write
Dmitry [639]

total cost = membership +cost per class* number of classes

y = 275+5*x

Choice C

6 0
3 years ago
A cylinder has a volume of 105 cubic centimeter what is the volume of a cone with the same base and height?
pychu [463]

Answer:

<h2>35 cm³</h2>

Step-by-step explanation:

The formula of a volume of a cylinder:

V_1=\pi r^2H

r - radius

H - height

The formula of a volume of a cone:

V_2=\dfrac{1}{3}\pi r^2H

If the cylinder and the cone have the same base (radius) and the same height, then the volume of the cone is three times smaller than the volume of the cylinder.

V_2=\dfrac{1}{3}\underbrace{\pi r^2H}_{V_1}

Therefore:

V_2=\dfrac{1}{3}V_1\toV_2=\dfrac{1}{3}\cdot105\ cm^3=35\ cm^3

5 0
3 years ago
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