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2 years ago

8 squared plus 9 left parenthesis 12 divided by 3 times 2 right parenthesis minus 7. Explain each of your steps.

Mathematics

1 answer:

vekshin12 years ago

4 0

Answer:

129

Step-by-step explanation:

PEMDAS (parenthesis, exponents, multiplication / division, addition /subtraction.) I will use these as abbreviations.

8^2 + 9 (12/3*2) - 7

P: Start with P, and inside P go left to right with M/D

D: 8^2 + 9 (4*2) - 7

M: 8^2 + 9 (8) - 7

E: The next step is E, so I will do 8^2

64 + 9 (8) - 7

M/D: I will then multiply from left to right

64 + 72 - 7

A/S: Finall I will add and subtract from left to right.

A: 136 - 7

S: 129

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Step-by-step explanation:

Given : The number of students who chose lunch was 5 more than the number of students who chose breakfast. Let x represent the number of students who chose breakfast and y represent the number of students who chose lunch.

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