What do you mean by that?
The equation is h=-16t²+40t+5.The ball will hit the ground when h=0. So:
0=-16t²+40t+5
16t²-40t-5=0
Using the quadratic formula, we get a positive value for t of <span>2.61930639376 seconds.
☺☺☺☺
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Answer:
69%
Step-by-step explanation:
Answer:
B. 1.8, 2.4, 3
Step-by-step explanation:
You can make use of pythagore to prove each of the given options and you'll see that B is the correct answer:
A)
B) 
C)
D)
Answer:
4y^2-6y+24
Step-by-step explanation:
add like-terms with polynomials (Khan Academy) had really good videos on specific examples