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Crazy boy [7]
2 years ago
7

Helpp WITH 2ND AND 4TH LINE !

Mathematics
2 answers:
Slav-nsk [51]2 years ago
8 0

Answer

1. 11.2

2. 8

Step-by-step explanation:

Helen [10]2 years ago
3 0

Answer:

1. x= 11.2

2. x= 8

Step-by-step explanation:

1.

124+5x=180\\-124 -124\\5x=56\\\frac{5x}{5} = \frac{56}{5} \\ x=11.2

Check:

124+5(11.2)=180\\124+56=180\\180=180

2.

7x-6=50\\+6 +6\\7x=56\\\frac{7x}{7}  = \frac{56}{7} \\x=8

Check:

7(8)-6=50\\56-6=50\\50=50

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Katarina [22]

3x^3 x 4x^2 = 12x^5

3x^3 x 1 = 3x^3

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2x^2 x 1 = 2x^2

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1x x 1 = 1x

12x^5 + 3x^3 + 8x^4 + 2x^2 + 4x^3 + 1x

Simplify

12x^5 + 7x^3 + 8x^4 + 2x^2 + 1x

Thus, answer is B

Hope this helps!

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2 years ago
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Answer:

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Step-by-step explanation:

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