You can solve it my adding multiplying subtracting and dividing each one helps you
Answer:
64 m, at time t = 4 sec
Step-by-step explanation:
We must maximize the function h = 32t – 4t^2. One way in which to do this is to find the axis of symmetry, t = -b / [2a], and from that calculate the height:
a = -4, b = 32, c = 0
-32
and therefore the axis of symmetry is t = ---------------- = 4
2(-4)
The height, h, at time t = 4, is h(4) = 32(4) - 4(4)^2 = 64 m
The maximum height of the ball is 64 m, at time t = 4 sec
Answer:
-11
Step-by-step explanation:
3 x (-3) x 2 - 4 x (-3) - 5
= -18 + 12 - 5
= -11
Order of operations: PEMDAS. Parentheses, exponents, multiplication, division, addition, subtraction.
Do parentheses first.
5(-2)^2
Next is exponents. -2 squared is 4:
5(4)
5 times 4 is 20