3 years ago

Evaluate -6 to the 2nd - 28 ÷ 4 + (-9).

1 answer:

5 0

-6^2 - 28/4 + (-9)
Multiply -6 by it's exponent.
36 - 28/4 + (-9)
Divide 28 by 4
36 - 7 + (-9)
Subtract 7 from 36.
29 + (-9)
Add -9 to 29. This would be the same as subtracting 9 from 29(29-9).
Final Answer: 20

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2 years ago

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Answer:

Step-by-step explanation:

By Basic proportionality theorem:

$\frac{10}{8} = \frac{3x - 6}{12} \\ \\ \frac{10 \times 12}{8} = 3x - 6 \\ \\ \frac{120}{8} = 3x - 6 \\ \\ 15 = 3x - 6 \\ 15 + 6 = 3x \\ 21 = 3x \\ \frac{21}{3} = x \\ 7 = x \\ \\ \huge \red { \boxed{x = 7}}$