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Diano4ka-milaya [45]
3 years ago
15

Solve the inequality. 9 + 9(x + 7) >= 36 The solution is

Mathematics
2 answers:
Leya [2.2K]3 years ago
7 0

Answer:

x >= -4.

Step-by-step explanation:

9 + 9(x + 7) >= 36

9 + 9x + 63 >= 36

9x >= 36 - 63 - 9

9x >= -36

x >= -4.

Alchen [17]3 years ago
6 0

Answer:

x≥ -4

Step-by-step explanation:

9 + 9(x + 7)≥ 36

Subtract 9 from each side

9 -9+ 9(x + 7) ≥ 36-9

9(x + 7) ≥ 27

Divide each side by 9

9/9(x + 7) ≥ 27/9

x+7≥ 3

Subtract 7 from each side

x+7-7 ≥ 3-7

x≥ -4

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50% of a certain number is 39. What is the number?
Allushta [10]
Let that certain number be 'n'

50% (n) = 39

50% ⇒ 0.5

0.5 (n) = 39

Divide both sides by 0.5

0.5n = 39
 /0.5    /0.5

n = 78.

So that certain number is actually <em><u>78! :)</u></em>

CROSS CHECK:

50% of 78

0.5 × 78

= 39

Hope this helps! :)
 
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