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o-na [289]
3 years ago
7

Geri is in a marathon race it took her 3 hours and 28 minutes to run 26 miles how many minutes did it take her to run 1 mike if

she ran at the same rate for the whole race
Mathematics
1 answer:
Ivan3 years ago
4 0

Answer:

It will take 8 minutes

Step-by-step explanation:

3 hours 28 minutes = how many minutes

3 hours * 60 minute/hour = 180 minutes

3 hours 28 minutes =180 +28 = 208 minutes


We can use proportions to solve

26 miles               1 mile

---------------    =   --------------

208 minutes           x minutes

Using cross products

26 * x = 208 *1

26x = 208

Divide by 26

26x/26 = 208/26

x = 8

It will take 8 minutes

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How many times can 2 1/2 be subtracted from 12 1/2
Luba_88 [7]
2 1/2 = 2.5
12 1/2 = 12.5

This means you can calculate how may times it goes in by dividing it and rounding the number down:

12.5 / 2.5 = 5

*5 can not be rounded down so it stays the same

This means that 2 1/2 goes into 12 1/2 5 times. Hope this helps! :)
5 0
3 years ago
Read 2 more answers
A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than ex
vredina [299]

Answer:

C. One can be​ 95% confident that the true proportion of all students receiving financial aid is between 0.52 and 0.66

Step-by-step explanation:

Given that the confidence interval is a term that defines a range of values with the probability to contain a population value that has an actual degree of confidence.

This is represented in a situation where population means falls in between upper and lower intervals.

Hence, in this case, the correct interpretation is option C: One can be​ 95% confident that the true proportion of all students receiving financial aid is between 0.52 and 0.66

3 0
3 years ago
Sterile fruit flies are used in an experiment where the proportion that survives at least days is given by . if the experiment b
Nana76 [90]

Answer:

Number of fruit flies after 14 days is equal to 1880.

Step-by-step explanation:

given,

fruit flies at the beginning of the experiment = 200 fruit flies

rate of increase of fruit flies = 5 per hour

to calculate the number of flies after 14 days.

time = 14 days = 14 × 24 = 336 hours

flies after 14 days = initial number of flies + rate of increase  × time

                             = 200 + 5 × 336

                             = 1880 fruit flies.

hence,Number of fruit flies after 14 days is equal to 1880.

4 0
3 years ago
Show and/or explain why (1/3)^3 = 1/27​
ratelena [41]
(1)^3 /(3)^3
(1x1x1)/{3x3x3}
1/27 hope it helps :))
4 0
3 years ago
Read 2 more answers
katie received 15 gifts and a total of $100 in cash for her birthday. She buys one book that costs $23, and she wants to donate
Lady bird [3.3K]

Answer:

Katie will have 7 dollars left over.

Step-by-step explanation:

100

She buys a book so subtract 23 from 100.

100-23= 77

Katie has 77 dollars and wants to donate $10 to as much charities. 10 can go into 77, 7 times, which means she can only donate to 7 charities in $10.

6 0
2 years ago
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