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hoa [83]
3 years ago
6

(a+7)2 please expand it

Mathematics
2 answers:
labwork [276]3 years ago
8 0
I think it actually means (a+7)(a+7) so it would be: a^2 + 14a + 49
sergiy2304 [10]3 years ago
3 0

Answer:

expand (a + 7) * 2:   2a + 14

Step-by-step explanation:

(a + 7) * 2

= 2 ( a + 7)

apply the distributive law:     a(b + c) = ab + ac

a = 2, b = a, c = 7

= 2a + 2 * 7

multiply the numbers:   2 * 7 = 14

= 2a + 14

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X = original amount of water
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3 years ago
David's bowling score is 6 less than 2 times Aaron's score. The sum of their scores is 84. Find the score of each student. Use t
Y_Kistochka [10]

Answer:

Aaron's bowling score is 30

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Step-by-step explanation:

The variable representing Aaron's score is = a

The variable representing David's bowling score = d

The sum of their scores is 84.

= a + d = 84...... Equation 1

David's bowling score is 6 less than 2 times Aaron's score.

d = 2a - 6

Substituting 2a - 6 for d in Equation 1

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3a = 90

a = 90/3

a = 30

Hence, Aaron's bowling score is 30

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d = 2(30) - 6

d = 60 - 6

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8 0
2 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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