12 is 60 percent of what number?
12 is 60% of 20
Answer:
Function 1
Step-by-step explanation:
The y-intercept is the y-value when the x-value = 0.
In Function 1 the y-intercept is 1 because (0, 1).
In Function 2 the y-intercept is -3 because x = 0 y = -3.
And 1 > -3 so Function 1 is the answer.
Let p and m represent the numbers of miles in the plains and mountains, respectively.
.. p + m = 300 . . . . . . . the whole trip was 300 miles
time = distance/speed, so the trip time can be written as
.. p/90 + m/37.5 = 3 48/60
.. 5p + 12m = 1710 . . . . . . . . . . multiply by 450 to put in standard form
You can solve these two equations by any of several means. The variable p can be eliminated by subtracting 5 times the first from the second.
.. (5p +12m) -5(p +m) = 1710 -5*300
.. 7m = 210
.. m = 30
30 miles of the trip was through the mountains.
Answer:
36
Step-by-step explanation:
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