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Viefleur [7K]
3 years ago
5

4 minute mile whats the average speed mi/min

Mathematics
2 answers:
g100num [7]3 years ago
8 0

1/4 mile per minute is the average speed.

pshichka [43]3 years ago
6 0
1/4 of a mile would be the answer
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Jacob leaves his summer cottage and drives home. After
krok68 [10]

Answer:

A linear relationship can be written as:

y = a*x + b

Where a is the slope and b is the y-intercept.

If this line passes through the points (a, b) and (c, d) then the slope can be written as:

a = (a - c)/(b - d)

Here y will represent the distance between Jacob and his house, and the variable x represents the time that he has ben driving.

In this case, we know that after driving for 5 hours, he is 112km from home.

Then we can write this point as (5h, 112km)

We also know that after 7 hours he is 15km from home.

Then we can write this point as (7h, 15km)

Then the slope of this function will be:

a = (15km - 112km)/(7h - 5h) = -48.5 km/h

Then the equation is:

y = -(48.5 km/h)*x + b

To find the value of b, we can replace the values of one of the points, for example in the point (7h, 15km)

This means that we need to replace x by 12h, and y by 15km, then we get:

15km = -( 48.5 km/h)*7h + b

15km + ( 48.5 km/h)*7h = b = 354.5 km

then the equation will be:

y = (-48.5 km/h)*x + 354.5 km

Now we want to answer: How long had Jacob been driving when he was 209 km from  home?

Then we need to only replace y by 209km, and solve for x:

209km = (-48.5 km/h)*x + 354.5 km

209km - 354.5 km = (-48.5 km/h)*x

-145.5km =  (-48.5 km/h)*x

-145.5km/( -48.5 km/h) = x = 3h

So he is 209km away from his home after driving for 3 hours.

6 0
3 years ago
This does not make sense to me
solong [7]
To find area you have to multiply length x width. so to find your answer the equation should be 15/22 x 2/5
6 0
3 years ago
Read 2 more answers
Please help me with questions 13-22!! I know I already answered 14 but if it is wrong please tell me!!! I don't have much time!!
neonofarm [45]

Answer:

13. no solution

15. 3

16. 2

17. 5

18. -8

19. -7

20. 6

21. -5

22. -7

3 0
3 years ago
Answer choices <br> 2/25<br> 1/25 <br> Please help me
irakobra [83]

Answer: 1/25

Step-by-step explanation:

(1/5) * (1/5) = 1/25

7 0
2 years ago
How many balloons does each animal get
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Giraffe needs 2 balloons while the poodle requires 1 balloon each.
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