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spin [16.1K]
3 years ago
12

HELP ASAP!!

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
7 0

Answer:

The answer for -7x + 8 - 4x - 9 is 1. -11x-1

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It’s for my geometry class and I don’t know how to solve it. Can someone please help me?
dusya [7]

Answer:

Below in bold.

Step-by-step explanation:

Because the 2 sides marked with the double lines are equal:

5y-1 = 2y+11

3y = 12

y = 4.

Also :

3x-5 + 2(2x+5) = 180

3x - 5 + 4x + 10 = 180

7x = 180 + 5 -10

7x = 175

x = 175/7 = 25.

5 0
3 years ago
0.2x + 1 = 1.6x + 3.1<br> What value of x satisfies the equation above?
guapka [62]

Answer:

x = -1.5

General Formulas and Concepts:

<u>Pre-Alg</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

0.2x + 1 = 1.6x + 3.1

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Subtract 0.2x on both sides:          1 = 1.4x + 3.1
  2. Subtract 3.1 on both sides:             -2.1 = 1.4x
  3. Divide both sides by 1.4:                 -1.5 = x
  4. Rewrite:                                            x = -1.5

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitution:                    0.2(-1.5) + 1 = 1.6(-1.5) + 3.1
  2. Multiply:                           -0.3 + 1 = -2.4 + 3.1
  3. Add:                                 0.7 = 0.7
5 0
3 years ago
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Tamiku [17]

Note: complementary angles are two angles whose sum is 90⁰

5 0
2 years ago
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Who can help me ?????
klio [65]
The answer should be 3.
8 0
4 years ago
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Find a composite number between 41 and 50, with the sum of its prime factors equal to 14
kari74 [83]
49, 7+7=14
There you go.
3 0
3 years ago
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