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kolezko [41]
3 years ago
13

I need help on this math problem

Mathematics
1 answer:
Contact [7]3 years ago
6 0

Answer:

domain is 6,5,4,3

range is 8,9,10,11

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Adam runs 13 miles in 143 minutes. How many minutes does it take him to run one mile? Adam runs at a rate of minutes per mile.
Aleksandr-060686 [28]

Answer:

Adam runs at a rate of 11 minutes per mile.

Step-by-step explanation:

Take 143 minutes and divide by 13 miles and you will get the answer of 11 minutes.

PLEASE MARK ME BRAINEIST.

3 0
3 years ago
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Linda wants to buy 2 sweaters and a pair of sunglasses at wild orchids. each sweater costs the same amount. the sunglasses cost
GarryVolchara [31]

Answer:

d

Step-by-step explanation:

IF there are 2 sweaters for the cost of s but then she bought 12$ sunglasses then and she wants to know the amount in total, then the answer sould be D. 2s+12=c to get the cost

8 0
3 years ago
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A 4-pint carton of sour cream costs $9.12. What is the price per cup?
Mamont248 [21]
1 pint = 2 cups

1 pint x 4 & 2 cups x 4

4 pints = 8 cups

9.12/8

1.14

$1.14 per cup
5 0
3 years ago
Suppose that a market research firm is hired to estimate the percent of adults living in a large city who have cell phones. 500
Alborosie

Answer:

The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).

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

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 500, \pi = \frac{421}{500} = 0.842

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.842 - 1.96\sqrt{\frac{0.842*0.158}{500}} = 0.81

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.842 + 1.96\sqrt{\frac{0.842*0.158}{500}} = 0.874

The 95% confidence interval estimate for the true proportion of adults residents of this city who have cell phones is (0.81, 0.874).

6 0
4 years ago
A bag contains purple marbles and white marbles, 30 in total. The number of purple marbles is 6 less than 5 times the number of
Nastasia [14]
The answer would be 9
7 0
3 years ago
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