Answer:
24
Step-by-step explanation:
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.
Hello!
The least common multiple is 3
Hope this helps!
The answer is true. We know this because 9^2 - 6^2 is 45.
We are given: The year of the empire fell = 1610.
We have x as a variable that represents the year after the given year 1610.
According to problem, the year after the year number 1610 will have a number that greater than 1610.
We can make a statement for inequality to be written.
"The year after the 1610 is greater than 1610".
The year after the 1610 is x and we use gerater than symbol >.
So, we can setup an inequality as:
x > 1610 : It can be read as x is greater than 1610.
