Answer:
1.5secs
Step-by-step explanation:
Given the expression that models the height as;
h(t) = -16t²+20t +6
The ball will touch the ground at when h(t) = 0
0 = -16t²+20t +6
Swap
-16t²+20t +6 = 0
Divide through by -2
8t²-10t-3 = 0
Expand using the general formula
t = -(-10)±√(-10)²-4(8)(-3)/2(8)
t = 10±√100+96/16
t = 10±√196/16
t = 10±14/16
t = 10+14/16
t = 24/16
t = 1.5
Hence it will take the ball 1.5secs to hit the ground
Answer:
M=multiply to the 2 then what it is 5x3 so. 15x2=30m
okay so 56,782,010,000 and you are just looking at the 8 so you could shorten it to 82,000,000 what is the value of the 8?
<span>82000000, eighty-two million
</span>
56 divided 7/8 to find out how many paper clips it is then multiply how many there is times 0.03. the total cost of the paper clips is $1.92