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11Alexandr11 [23.1K]
3 years ago
8

How can you use mental math to determine that 2800 divide equals 400

Mathematics
1 answer:
AURORKA [14]3 years ago
4 0

2800 ÷ 400

Cross out 2 zeros from both numbers, then you have 28 ÷ 4  = 7

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Solve for x.
PSYCHO15rus [73]

The answer is the first option: 1) x> the quantity 4 times b minus 9 all over a

The explanation is shown below:

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3 years ago
You use substitution to solve a system of equations and, after simplifying the equations, end with an expression that says 0 = 4
attashe74 [19]

Answer:

Check the first two.

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disa [49]

Answer:

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Step-by-step explanation:

Given:

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3 years ago
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