Answer:
see attached
Step-by-step explanation:
The x-coordinate of the vertex is given by ...
x = -b/(2a)
for f(x) = ax^2 +bx +c.
We see that the vertex is at x = 1, and we are given a = -16. Then we can find "b" from ...
1 = -b/(2(-16))
32 = b
We know the y-intercept of the equation is 5 (the starting height), so the equation must be ...
h(t) = -16t^2 +32t +5 . . . . . matches the last choice
Y=1.5x+2 because the rate of change is 1.5 and the y intercept is 2
Answer:
2/5
Step-by-step explanation:
when adding a positive to a negative, you can reverse the order so that you can remove the addition sign:
so instead of -4/5 + 6/5
you can make it 6/5 - 4/5 which equals 2/5 or .4
77.5%
Change to decimal:-
77.5 ÷ 100 = 0.775
775/1000
31/40
77.5% = 31/40
Sometimes. A chord is a diameter only if it passes through the center of the circle.
