Answer:
22 cards
Step-by-step explanation:
Set up a ratio.
Check: Add 22 to 39. 22+29=51
34/51 = 2/3
Have a great day
-4(-3x-2)=32 please hurry
1 answer:
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Answer:
5 seconds
Step-by-step explanation:
The relationship between "d" and "the ground" is not described. If we assume that "d" is distance above the ground, then the rock will hit the ground when d=0. This gives rise to the quadratic equation ...
-t^2 +4t +5 = 0
-(t -5)(t +1) = 0
t = 5 or t = -1 are solutions. Only the positive solution is useful.
The rock will hit the ground after 5 seconds.
