Answer:
80 gallons
Step-by-step explanation:
looking at t=0 the graph is at 80, unless there is more info I would say that the inital value was 80 gallons.
Answer:
Step-by-step explanation:
-2(u+1)-5 = -2*u + (-2)* 1 - 5
= -2u - 2 - 5
= -2u - 7
Step-by-step explanation:
collect like terms
-3x-2x=19
-5x=19
x=19/5
x=3.8
Answer:
120.25
Step-by-step explanation:
4 to the third power is 64. so 64 + 9 = <u>83</u>. 20-8 = <u>18</u>. 6 + 2 = <u>8</u>.
so 83 + 18 + 8 = 109. so 8 divided by 18 = 2.25. 109 + 9 + 2.25 = <u>120.25.</u>
Disregarding air friction, the distance traveled by an object due to gravity is : H = 0.5*g*t^2. g is the gravitational constant at the surface of earth.
g= 9.81 m/s^2
After 3 seconds, Distance = .5*9.81*9 = 44.15 meters traveled.
Since it was dropped from a height of 90 meters, the current height is 90 - 44.15 = (a) 45.85 meters
(b) It has to travel 90 meters to hit the ground . So we must find t
Using the same equation
t = (2*H/g)^.5
t = (2*90/g)^.5 = 4.28 seconds until it hits the ground
