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Gre4nikov [31]
3 years ago
9

If it took 28 minutes to run 4 miles, then at that rate, how long would it take to run 20 miles?

Mathematics
2 answers:
SSSSS [86.1K]3 years ago
8 0

Answer:

140 minutes

Step-by-step explanation:

After 28 mins you've gone 4 miles, assuming this rate is constant and you dont slow down or speed up, in order to get to 20 miles you will have run 5x as much (20/4 = 5), thus 5x the amount of time (28x5).

20/4 = 5

5x28 = 140

Hunter-Best [27]3 years ago
5 0

Answer:

140 minutes

Step-by-step explanation:

28 :4 =7 minutes to run 1 mile

20 ×7 =140 minutes

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The slope of the line is m=3/4. One point is (x, 2) and (3,-4)<br> Find X
Viktor [21]

Answer:

x is 11

Step-by-step explanation:

We know the slope (3/4) and a point (3,-4), so we can use point-slope form (y-y1=m(x-x1)

Substitute the numbers into the equation

y--4=3/4(x-3)

simplify

y+4=3/4(x-3)

do the distributive property

y+4=3/4x-9/4

subtract 4 from both sides

y=3/4x-25/4

this is the equation of the line.

Since it says that (x,2) is a point in the equation, we can substitute it into the equation

2=3/4x-25/4

add 25/4 to both sides

33/4=3/4x

multiply by 4/3

11=x

we can double check by plugging (11,2) into the equation of the line.

2=3/4(11)-25/4

2=33/4-25/4

2=2

it works! :)

Hope this helps!

7 0
3 years ago
-5/12 - (-9/3) what is the answer for this equation
WINSTONCH [101]

Answer:

2 7/12

Step-by-step explanation:

Simple fraction problem

3 0
1 year ago
I NEED THIS DONE ASAPPPP<br> expand 4(m+2)<br><br> 4(m+2) =
77julia77 [94]

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3 0
3 years ago
1. The equation y=x^2-9x+20 models the roller coasters path over time. The variable y represents height (in feet) above or below
azamat

Answer:

1) the factored form is  y= ( x-5 ) ( x+4 )

2) the vertex is (4.5, -0.25)

3) the y intercept is when x equals 0 so it is at (0,20)

4) it opens upward and the vertex is (4.5, -0.25) the x intercepts are (4,0) and (5,0) and the y intercept is  (0,20)

5)

a. it dips  between 4 seconds and 5 seconds so the x intercepts are (4,0) and (5,0)

b. it is taken at the vertex aka the lowest point so the height is -0.25

8 0
3 years ago
Read 2 more answers
Sporting Goods Company could ship 6 footballs in each carton how many cartons are needed to ship 75 football
postnew [5]
You will take 75 divided by 6 and you will get 12.5 so you will round up to 13
8 0
3 years ago
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