<span>When naming a polygon, the letters must be connected. It shouldn't jump from one letter to the other on different sides.
The answers for this question are A, C, D, and F.
</span><span>B doesn't work because A isn't directly connected to O.
E doesn't work because K isn't directly connected to N.</span>
Cf=cold faucet rate
hf=hot faucet rate
cf*18min=1 tub
(cf+hf)*8min=1 tub
cf+hf=1tub/8min
cf=1tub/18min
hf=(1/8-1/18)tubs per minute
hf=5/72
It takes 14.4 minutes.
Olga worked 37.5 hours last week and earned $12.50 an hour.
[ h = the number of hours y = total earnings ]
12.50h = y
12.50(37.5) = y
468.75 = y
She earned $468.75 last week
If she gets a $2.50 per hour raise:
12.50 + 2.50 = 15.00
She gets $15 per hour.
How many hours will she have to work to make $468.75?
15h = 468.75 Divide 15 on both sides to get "h" by itself
h = 31.25
She needs to work 31.25 hours
Solution
Find the mid point of A and B.
The mid point of A and B is (-1. 0.5)
Now find mid point of (0, 4) and (-1, 0.5)
= [(0 + (-1)/2 , (4 +0.5)/2 ]
= (-1/2, 4.5/2)
= (-0.5, 2.25)
The answer is (-0.5, 2.25)
Thank you.