Let A represent the speed of car A. Using your formula,
.. A*2 = D
.. (A +15)*1.5 = D . . . . . the same distance in a shorter time at a higher speed
Equating the two expressions for D, we get
.. 2A = 1.5(A +15)
.. 2A = 1.5A +22.5 . . . . . eliminate parentheses
.. 0.5A = 22.5 . . . . . . . . .subtract 1.5A
.. A = 22.5/0.5 = 45 . . . .divide by 0.5
Car B was 15 mph faster than this.
Car B traveled at 60 miles per hour.
Answer:
0,1
-5,2
Step-by-step explanation:
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Two feet is 66.67% of a yard.
This is because a yard is three feet, and two feet is two-thirds of three feet.
Two-thirds of 100 is 66.67, making two feet 66.67% of a yard.
I hope this helps.
Answer:
The mass will alter with time as water is absorbed back into the crystals.
Step-by-step explanation:
Answer:
I would say that it is none of the above that one is much more reasonable than the other ones
Step-by-step explanation:
