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Alinara [238K]
3 years ago
12

Pls helpppp meeeeee :(

Mathematics
1 answer:
Alja [10]3 years ago
7 0

Answer:

Sam

30

Step-by-step explanation:

Sam made a mistake when he said 10^2 -20. The steps should have been:

2n^2-20=2(5)^2-20\\2(25)-20\\50-20=30

You are supposed to square 5 first before multiplying 2. Sam multiplied by 2 first. The correct answer is 30.

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Write (8 x 10) + (6 x 1) +(2 x 0.1) + (7 x 0.001) with words.
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Answer:

Eight times ten plus six times one plus two times one-tenth plus seven times one-thousandth.

Step-by-step explanation:

(8 x 10) = eight times ten

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