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ASHA 777 [7]
4 years ago
12

Simplify the expression 82 + 9 (12: 3 x 2) – 7. Explain each of your steps.

Mathematics
1 answer:
Olin [163]4 years ago
5 0

Answer:

129

Step-by-step explanation:

8^2 + 9 (12/3 x 2) -7  Parentheses first 12 : 3 is the same as 12/3

    8^2 + 9 (4x2)-7 Parentheses:

      8^2 + 9 (8) - 7 Exponent 8 x 8:

        64 + 9(8) - 7     Multiply:

         64 + 72- 7     Add :

             136 - 7    Subtract:

                 129

The answer is 129.

Hope this helps :)

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In a series RL circuit, ET = 120 V, R = 40 Ω, and XL = 30 Ω. What is ER?
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Answer:

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Step-by-step explanation:

We are given with Voltage across terminals of a series RL circuit, E_{T}=120V

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Since Resistor and inductor are in series, same current flows through both.

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