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aliya0001 [1]
3 years ago
7

Solve this simultaneous equation m+2n=10 and 2n+3m=18​

Mathematics
1 answer:
Ksju [112]3 years ago
3 0

Answer:

m=4

n=3

Step-by-step explanation:

m+2n=10

2n+3m=18

Subtract

-2m=-8

m=4

Solve for n

(4)+2n=10

2n+3(4)=18

2n=10-4

2n=18-12

2n=6

n=3

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Answer:

The minimum sample size that should be taken is 62.

Step-by-step explanation:

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If we want to be 90% confident that the sample mean is within 1 word per minute of the true population mean, what is the minimum sample size that should be taken

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3 years ago
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