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kobusy [5.1K]
3 years ago
11

HELPPPP!!!!Tamara has a cell phone plan that charges $0.07 per min. With a monthly fee of $19. She budgets $29.50 per month for

a total cell phone expenses without taxes. what is the maximum number of minutes tamara could use her phone each. month in order to stay at her budget
Mathematics
2 answers:
aleksley [76]3 years ago
4 0
I believe the answer is 2,065 minutes
mihalych1998 [28]3 years ago
3 0
272 minutes = 19.04 or 271 minutes =18.97

422 = 29.54 or 423 = 29.61
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The owner of a convenience store keeps track of how many customer buy lunch food during the "noon rush" each day for four days a
alexdok [17]

Answer:

c) 62.

Step-by-step explanation:

Let x represent number of customers came in on the fifth day.

We have been given that the mean number of customers for those four days is 52. So total number of customers on 4 days would be 4 times 52 that is 208 customers.

We know that mean of a data set is equal to sum of all data points divided by number of data points.

Total number of customers on 5 days would be 208+x and total number of days is 5.

Since we need a mean of 54, so we can set mean of 5 days equal to 54 as:

\frac{208+x}{5}=54

Multiply both sides by 5:

\frac{208+x}{5}*5=54*5

208+x=270

208-208+x=270-208

x=62

Therefore, 62 customers must come in on the fifth day to make the five-day mean 54 and option 'c' is the correct choice.

4 0
3 years ago
Martin can run 1 mile in 7 minutes. What valid proportions can be written from this information? Check all that apply. StartFrac
Tpy6a [65]

Answer:

<u>1/7=3/21</u>

<u>7/1=21/3</u>

the other fractions are not correct/valid therefore the fractions above are the correct answers

Step-by-step explanation:

Let me know if you need any other help:)

3 0
3 years ago
Read 2 more answers
For the following geometric sequence find the explict formula -1 ,3, -9.
Afina-wow [57]

Answer:

-1 x -3^{n-1}

Hope this helps

Step-by-step explanation:

5 0
3 years ago
The minute hand on a watch is 14 millimeters. In the course of an hour, how much area does it cover? Leave answers in terms of π
Lesechka [4]
In an hour the minute hand goes all the way around, or a 360 loop. so it's its \pi times the radius squared.
8 0
2 years ago
Find 2x2 - 2z4 + y2 - x2 + z4 if x = -4, y = 3, and z = 2.
Alexxandr [17]
X = - 4;  y = 3;  z = 2;
2 x² - 2 z^4 + y² - x² + z^4 =
= 2 * (-4)² - 2 * 2^4 + 3² - ( -4)² + 2^4 =
= 2 * 16 - 2 * 16 + 9 - 16 + 16 =
= 32 - 32 + 9 - 16 + 16 =  9 

8 0
3 years ago
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