This on is very easy go to my website so i can explain it better for you
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8 x 45 = (8 * 40) + (8 * 5) ...now that can be done mentally
Answer:
-6
Step-by-step explanation:
24/4 is 6 but the tempature decreased due to that we put a negative symbol in front.
252mmSquared
Step-by-step explanation:
28+28=56
74-56=18
18÷2=9
9×28=252
Answer:
Step-by-step explanation:Since we want to know how much time elapsed since the object was launched until it ht the ground. At the ground, the height is 0.
Therefore the equation h(t) = 80t – 16t2 becomes 0= 80t – 16t2
Solving the equation for t gives 80t =16t2 or 16t=80 or t=5sec
The object hits the ground 5 seconds after it is launched.
