Answer:
(c).
Step-by-step explanation:
h(t) = - 16 t² + 80 t
Coordinates of the vertex are:
<em>t</em> = -
=
= <em>2.5 sec. </em>
<em>h</em> = - 16(2.5)² + 80(2.5) = - 100 + 200 = <em>100 ft</em>.
Answer: red 36 m
Step-by-step explanation: base plus base = 18 / 2 = 9 * 4 = 36 m
Answer:
Step-by-step explanation:
(i)

(ii)
x=5 ==> y=2*5²=50
(iii)

Answer:
7.5
Step-by-step explanation:
Answer:
The answers I got might not be right but:
47. Equation: (3x)-(7+5x)=25 x= -16
48. Equation: x÷(-3+6)=9 x=37