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2 years ago

Shawnda spent $259.20 on a scooter. This was 80% of her budget for a new scooter. How much was the total budget?

Mathematics

1 answer:

just olya [345]2 years ago

7 0

X * 0,8 = 259,2 <=>

x = 258,2/0,8 <=>

x = 322,75

The total budget was 322,75$

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Answer:

The sample size needed is 2401.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

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We have to find n, for which M = 0.02.

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2 years ago

Read 2 more answers

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tigry1 [53]

Answer:

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7.73>x>4.54 and x is months since January, and since months can only be integers...

x=[5,7]

So January + 5, 6, and 7 respectively are the three months that satisfy the equation...

June, July, and August.

Step-by-step explanation:

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2 years ago