The point (-1, 5) is located here:
Yes, I did draw that in paint just for you.
12! / 4!
= 1×2×3×4×5×6×7×8×9×10×11×12 / 1×2×3×4
= 5×6×7×8×9×10×11×12 = 19958400
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.
Answer:
Amount left = Rs 45
Step-by-step explanation:
Let the initial amount be x.
Translating the word problem into an algebraic expression, we have;


Cross-multiplying, we have;


Rearranging the equation (collecting like terms), we have;

x = Rs 60
Next, we find the amount left;
Amount left = 60 - 15
Amount left = Rs 45