Answer:
168
Step-by-step explanation:
Figure out 10% which is 48
Times by 3 to get 30% 144
then half 48 to get 5% which is 24
Answer:
Step-by-step explanation:
1 liter = 1000 ml
0.1 liter = 0.1*1000 = 100.0 = 100 ml

0.1 liter : 500 ml = 1 : 5
The lines have equal gradients;
m

Equation of line 2;
y=mx+c
y=

x+c
-15=

+c
c=-11
y=4/5x-11
Answer:
4 seconds
Step-by-step explanation:
When the ball is on the ground h = 0, hence
- 16t² + 64t = 0 ( solve for t )
factor out - 16t
- 16t(t - 4) = 0
equate each factor to zero and solve for t
- 16t = 0 ⇒ t = 0
t - 4 = 0 ⇒ t = 4
the 0 solution is the height of the ball before being hit and
the time the ball takes to hit the ground is 4 seconds