Answer:
answer is 7a proved
Step-by-step explanation:
sloution
=-3a-4
=-+- =+ so,
=-3a-4
=7a
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Average speed=total distance / total time....
s=25/1.5=50/3mph (16 2/3 mph)
So you traveled an average of 2/3 mph greater than your record pace...
75 students decreased by 80% is 74.2
9514 1404 393
Answer:
- x +3x = 180
- x = 45 . . . . . . . choice C
- 3x = 135 . . . . . choice F
Step-by-step explanation:
Let x represent the measure of the original angle in degrees. Three times its measure is 3x. That will be the supplement if the sum of the two angles is 180°.
x + 3x = 180 . . . . . . . . . equation for finding the angle
x = 180/4 = 45 . . . . . . divide both sides by 4
3x = 3(45) = 135
The first angle is 45°. The second angle is 135°.
