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Charra [1.4K]
3 years ago
7

Helen got an 95% on her math quiz. She had 38 questions right. How many questions were on the quiz?

Mathematics
2 answers:
marshall27 [118]3 years ago
5 0

Answer:

40

Step-by-step explanation:

because 95/100 x 38/1 = 40

Serjik [45]3 years ago
4 0

Answer:

45 is right answer. ..... . .......

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If you mean by x over 4 that it is fraction then there is no different between it and divisions
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a previous analysis of paper boxes showed that the standard deviation of the length is 9mm. What is the 98% confidence interval
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We cannot calculate the confidence interval without the sample size.  However, for the second question, the sample size needed would be 49.

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