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Vedmedyk [2.9K]
3 years ago
15

5a+7=4a+4 solve for a.​

Mathematics
2 answers:
stich3 [128]3 years ago
8 0

Answer:

a=-3

Step-by-step explanation:

Combine the variable: 5a+7=4a+4

Combine the constants: a+7=4

a=-3

Zarrin [17]3 years ago
3 0

Answer:

5a+7=4a++4

solution

54-4a=4-7

a= -2

1a/1=-2/1

a=-2

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NASA is conducting an experiment to find out the fraction of people who black out at G forces greater than 6. In an earlier stud
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Answer:

The large sample n = 190.44≅190

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<u>Step-by-step explanation</u>:

Given  population proportion was estimated to be 0.3

p = 0.3

Given maximum of error E = 0.04

we know that maximum error

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\sqrt{n} = \frac{Z_{\alpha } \sqrt{p(1-p)} }{m.E}

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Hence The  large  sample would be required in order to estimate the fraction of people who black out at 6 or more Gs at the 85% confidence level with an error of at most 0.04 is n = 190.44

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