A pipe can fill a tank in 3 hours. A second pipe can fill the tank in 5 hours. How long will it take to fill the tank with both pipes running at the same time?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30