9514 1404 393
Answer:
3 seconds
Step-by-step explanation:
We want to find t when h=0.
0 = 2t² -5t -3 . . . . . . . divide by -8
0 = (2t +1)(t -3) . . . . . . factor
The values of t that satisfy this equation are the values that make the factors zero: t = -1/2, t = 3. The positive value is the one of interest.
It takes 3 seconds for the object to hit the ground.
Answer:
The total cost of boring the 750 meters is $37,700.
Step-by-step explanation:
We know that the cost of the first meter is $250.
You want to keep on adding $50 each time you add a meter for example the cost of the second meter would be $300 because you add $250+50. Another way is that you can multiply so for the third meter it would be $350 as you $250+50(2).
In that way you can see a pattern forming and we want to subtract 1 variable when multiplying as you are already originally adding $50.
So now we want to form an equation to solve for the cost of 750 meters. The equation I would make is
250+50(750-1)
then you can solve to get 37700 that is shown below
250+50(750-1)
250+50(749)
250+37450
37700
That will be our answer!
The total cost of boring the 750 meters is $37,700.
Answer:
iguoblb 55
Step-by-step explanation:
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Answer:
8ft
Step-by-step explanation:
Radius is the half of the diameter, which is 16ft in this circle. So half the diameter will be 16÷2 which is 8ft.
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