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3 years ago

Jan lost 22 points on her exam. She got 11 questions wrong.

Mathematics

2 answers:

rosijanka [135]3 years ago

7 0

Answer:

Step-by-step explanation:

22/11=2

jeyben [28]3 years ago

3 0

Total points =50
Total points =100 because every exam has a total of 100 points.

Total points per each question = 100 / 50 =2

She was penalized two points for each wrong question

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If M is the set of all square numbers less than 80 and N is the set of all non-negative even numbers that are under 30, Write th

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Answer:

Step-by-step explanation:

All square numbers are numbers formed by squaring a single number. If M is the set of all square numbers less than 80, then

M = (4, 9, 16, 25, 49, 64)

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If N is the set of all non-negative even numbers that are under 30, then

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It will not include 30 because we want even numbers under 30

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3 years ago

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2 years ago

A nursery owner buys 8 panes of glass to fix some damage to his greenhouse. The 8 panes cost $19.60. Unfortunately, he breaks 3

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Answer:

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2 years ago

A researcher wishes to estimate the number of households with two cars. How large a sample is needed in order to be 99% confiden

solmaris [256]

Answer:

Sample size n = 1382

so correct option is D) 1382

Step-by-step explanation:

given data

confidence level = 99 %

margin of error = 3%

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to find out

How large a sample size needed

solution

we know here P = 25 %

so 1 - P = 1 - 0.25

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α = 1 - 99% = 1 - 0.99

α = 0.01

and $\frac{\alpha}{2}$ = $\frac{0.01}{2}$

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3 years ago

Nancy is very happy with the service at the hotel she is staying in. She wants to tip the room service waiter 15 percent of the

valina [46]

Easy way to find this out!

This is how I would do it:

1. Turn 15% into a decimal --> 0.15

2. Multiply 0.15 and 120.75 --> 18.11

3. Get your answer! $18

4 0

2 years ago

Read 2 more answers