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lapo4ka [179]
3 years ago
7

A train traveled 210 miles in 3.5 hours to its first stop. It then continued on traveling another 130 miles in 2.5 hours. What w

as the average speed of the train for the entire journey
Mathematics
1 answer:
Eva8 [605]3 years ago
8 0
56.7 mph just a distance over time question, since they want the average speed you take the total distance divided by the total time
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a third grader has a goal of solving 100 math facts in 5 minutes (or 300 seconds). how many seconds can he spend on each math fa
arsen [322]

Answer:

1 fact per 3 seconds because you divide 300 by 100

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3 years ago
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53 - 9y = 1<br> -7.2 + 2y = -5
telo118 [61]

Answer:

1.1, -5

Step-by-step explanation:

53 - 9y = 1

from equation i

53-9y = 1

-9y= 1-53 = -52

y = -52/-9= 52/9 = 5⁷/₉

-7.2 + 2y = -5

add 7.2 to both sides

2y= -5+7.2 = 2.2

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3 years ago
Which equation can be simplified to find the inverse of y = 5x2 + 10?
zmey [24]

f^-1(x) = sq.rt 5(x - 10)/5, sq.rt 5(x - 10)/5 is the inverse of y = 5x^2 +10

Step-by-step explanation:

interchanging the variables

x = 5y^2 + 10

5y^2 +10 = x

5y^2 = x - 10

dividing by 5

5y^2/5 = x/5 + -10/5

y^2 = x/5 + - 10/5

y^2 = x/5 - 2

y = 5 (x-10) 0/5 (sq.rt)

g(5x^2 + 10) = 5x/5

g(5x^2 + 10) = x

f^-1(x) = sq.rt 5(x - 10)/5, sq.rt 5(x - 10)/5 is the inverse of y = 5x^2 +10

5 0
3 years ago
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A credit card company offers an annual 2% cash-back rebate on all gasoline
Nitella [24]

$4,350  x 0.02 = $87

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6 0
3 years ago
Can somebody help me find the perimeter of this figure?
lbvjy [14]

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Step-by-step explanation:  P = 17 + 13 + 25 + 9

3 0
3 years ago
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