To determine the time it takes for boulder to reach its maximum height, derive the equation and equate to zero.
h = -16t² + 112t + 30
dh / dt = 0 = -32t + 112
The value of t from the equation above is 3.5 s. Substitute this value of t to the original question,
h = -16(3.5 s)² + 112(3.5 s) + 30 = 226 ft
Thus, the answer is letter D.
(The one you have checked so far is not correct, the product of a rational and irrational number is irrational)
The sum of a and b is never rational
b^2 is sometimes rational
^ Those two I know are correct
I forget if A^2 is always rational is correct or not
I hope this helps at all
E
If the pre-image is dilated, the image must be congruent to the pre-image.
Answer:
X>42
Step-by-step explanation:
Answer:
Step-by-step explanation:
30 + .40(30) = 30(1 + .40) = 30(1.4) = $42