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iogann1982 [59]
3 years ago
15

Let Us Cell U charges $0.15/minute for long distance calls. Cell for Less charges $10.50/hour plus an additional $0.10/minute fo

r partial hour if you average 5 hours and 15 minutes of long distance calls each month,which company will save you money?
Mathematics
1 answer:
docker41 [41]3 years ago
4 0
Let Us Call <span>better</span>

translate 5 hours and 15 min into all min to find the total for us cell u. 5*60=300, so 315 minutes. So then multiply .15 by 315 and you get 47.25$. 

<span>Now do Call for us. so first multiply 5 by 10.50. you get 52.50$.</span>
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inysia [295]

Answer:

Step-by-step explanation:

11 a).

20x + 5 + 24x - 1 = 180

44x = 176

x = 176 / 44

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2 years ago
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the answer of the question is :

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Answer:

144

Step-by-step explanation:

1. Rewrite question since you know the variable. Rewritten it would be 4×3^2

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Hopefully it's right!

3 0
3 years ago
The Office of Student Services at UNC would like to estimate the proportion of UNC's 34,000 students who are foreign students. I
Pachacha [2.7K]

Answer:

Mean is 3.05

Standard deviation is 1.69.

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they are foreign, or they are not. This means that we can solve this problem using concepts of the binomial probability distribution.

Binomial probability distribution

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The standard deviation is given by the following formula:

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