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vova2212 [387]
3 years ago
5

A person runs 1 4/5 miles in 1/5 of an hour. Determine how many miles they are running per hour

Mathematics
1 answer:
Mashcka [7]3 years ago
3 0

Answer: 9 miles per hour.

Step-by-step explanation:

In 1 hour they would run (1 4/5)/(1/5) = (9/5)*5 = 9 hours. So, they are running 9 miles per hour.

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Jane works twice as fast as her daughter Anna. If it takes 15 minutes to clean the kitchen together, how long would it take Anna
Sonbull [250]
Here, Twice fast means, she takes half time in doing same amount of work.
Let, Anna takes = 2t & Jane takes = t

It would be: 1/t + 1/2t = 1/15
2t + t / 2t² = 1/15
15(3t) = 2t²
2t² = 45t
Divide both sides by t, 
2t = 45
t = 45/2
t = 22.5
& 2t = 22.5(2) = 45

In short, Anna would take 45  minutes

Hope this helps!
7 0
3 years ago
If the aorta (diameter of da) branches into two equal-sized arteries with a combined area equal to the aorta, what is the diamet
kompoz [17]

If each of the branches has half the area of the aorta, its linear scale factor is the square root of 1/2, or (√2)/2.

The diameter of one of the branches is (da×√2)/2.

3 0
3 years ago
The box and whiskers plot represents the results of the same math test being given to two different classes. According to the bo
densk [106]

Answer: Answer A: Both classes have a range of 45

Step-by-step explanation:

above the two graphs we can see a number line ranging from 50-100

bellow that, we can see 2 box and whisker plots, one for second period and one for fourth period. the larger rectangular boxes show all the number results, the line in between them states the average result. Both lines have starting points at 55 and ending points at 100.

100-55=45   45 being the range. Since 2nd and 4th both share the same range answer A could possibly be correct

B is wrong because 2nd period has a median of 90

C is wrong because no periods have a median of 100

D is wrong because most of the students scored an 85+

conclusion: answer A is correct

4 0
3 years ago
Read 2 more answers
Heyo, please don't ignore! i really need help on these questions
Sauron [17]

Answer:

times

21.12

28

I will pay 11.20 and get back .20 for the half(.5) of a drink box I can't buy

Step-by-step explanation:

7 0
3 years ago
Write the fraction as the sum of two fractions with the same denominator
grandymaker [24]
1/4 + 1/4 = 1/2

I got 1/2 because if you add 1/4 and 1/4 you'd get 2/4, and when you simplify 2/4 you'd get 1/2.
3 0
3 years ago
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