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USPshnik [31]
2 years ago
13

The starting salary of a starting teacher is $40,000, which will increase by 2% each year

Mathematics
1 answer:
g100num [7]2 years ago
3 0

Answer:

Choice B - (1.02)

Step-by-step explanation:

With the teachers starting salary being $40,000, we can rightfully assume that it their salary would not increase with Choice A, $40,000 * 0.2 = $800.

2% otherwise known as 0.02, would make the teachers yearly salary $40,000 * 1 + 0.02, or $40,000 * 1.02. Making the correct answer, Choice B - (1.02). (This would also give the teacher an additional $800 per year!)

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RUDIKE [14]
The correct answer is true
3 0
3 years ago
if the ratio of home fans to visiting fans is 5:2 and all 42000 seats in a stadium are filled, how many visiting fans are in att
jeka94

Answer:

12000

Step-by-step explanation:

Sum the parts of the ratio, 5 + 2 = 7

Divide the total seats by 7 to find the value of one part of the ratio

42000 ÷  7 = 6000 ← value of 1 part of the ratio

visiting fans = 2 × 6000 = 12000

8 0
3 years ago
450 high school freshmen were randomly selected for a national survey. Among survey participants, the mean grade-point average (
umka21 [38]

Answer:

The margin of error is of 0.01.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.7}{2} = 0.15

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.15 = 0.85, so Z = 1.037.

The margin of error is of:

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

Standard deviation was 0.21.

This means that \sigma = 0.21

Sample of 450:

This means that n = 450

What is the margin of error, assuming a 70% confidence level, to the nearest hundredth?

M = z\frac{\sigma}{\sqrt{n}}

M = 1.037\frac{0.21}{\sqrt{450}}

M = 0.01

The margin of error is of 0.01.

4 0
3 years ago
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Answer:

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2 years ago
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