The line that is horizontal on a graph
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1.5 miles per minute is 90 mph.
Slowing down by 15 mph makes 75 mph.
Reduce speed by a third (25 mph) and that makes 50 mph.
There are 6 things
1 2 3 4 5 6
There are 3 at a time
So 6!(things) / (6-3)! (things-how many at a time)
6!/(6-3)! Or 6!/3!
! Means multiply all below that number so
6×5×4×3×2×1/ 3×2×1
30×4×3×2×1/3×2×1
You can simplify 3×2×1 since they are both on top and bottom they cancel out
30×4= 120
Answer:
D
Step-by-step explanation:
Dividing by a fraction is the same as multiplying by its reciprocal.
6 ÷ 1/3
= 6 x 3/1
= 6 x 3
= 18
Rational because irrational numbers cannot be expressed as fractions
