X=time of the third person it would take to fill the pool
We can suggest this equation:
6[(1/20) + (1/15) +(1/x)]=1
6[(3x+4x+60)/60x]=1
(7x+60)/10x=1
7x+60=10x
7x-10x=-60
-3x=-60
x=-60/-3
x=20
Answer: the third person alone would fill the pool in 20 hours .
Answer:
<u>2.5 seconds</u>
Step-by-step explanation:
Resting position is at y = zero which mean x intercept
So, we need to find the time between two consecutive points of intersection with the x-axis.
Which mean it is the half period of the given function as it is a sine wave
From the graph we can deduce that
<u>2.5 seconds</u> are required for the pendulum to move from its resting position, swing in one direction and return to its resting position.
Answer:
perimeter = 14
area = 6
Step-by-step explanation:
p = 4 + 3 + 7
a = L × w
2
4 because doubled it equals eight, add four it equals twelve, subtract four it equals eight, subtract three and it equals five.
