25% of 80 is 20.
80*1.25 is 100.
Answer:
81
Step-by-step explanation:
2(x - 25) = 112
x - 25 = 112/2
x - 25 = 56
x = 56 + 25
x = 81
Answer:
Klog earned $135.45 altogether.
Step-by-step explanation:
<u>Hours</u>
<em>Monday - Friday : 5 days / 3.5 hours</em>
<em>Saturday : 1 day / 4 hours</em>
3.5 · 5 + 4
= 17.5 + 4
= 21.5
<u>Money</u>
<em>$6.30 per hours / 21.5 hours</em>
6.30 · 21.5
= $135.45
The given
equation in this case is:
<span> y = -16 t^2 + 400</span>
We can see
that the slope of the equation is negative (-16) which means that the position
of Kay is on the positive y-axis , while the bottom of the river is in the
origin. This is supported by taking t = 0, the initial y becomes y = 400.
Therefore the position of Kay now is at (0, 400).
So to find
for the time when the camera hits the water, then y must be zero (t, 0) so we
have to find for t in this case.
When y = 0
0 = -16 t^2
+ 400
16 t^2 = 400
t^2 = 25
t = 5 s
<span>Therefore it
takes 5 seconds for the camera to hit the water and for Kay to see a splash.</span>
