if someone could help me with these seven HW problems. i had do do 75 of them, i just cant figure out these 7! help is much needed..thanks you so much!
#1. 6t^2-7t-5 all over 2t+1
#2 q^2-11q+30 Divided by q^2-2q-24
#3 4x+12 over 3-x minus 3x+15 over 3-x
#4 x+3 over x^2-3x-10 minus 2 over x-5
#5 x^-2-y^-2 over y^-1-x^-1
Solve the Equation
#6 3x over x^2-9 Plus 1 over x-3 = 3 over x+3
#7 Following a severe snowstorm, Ken and Bettina must clear their driveway and sidewalk. Ken can clear the snow by himself in 4 hours, and bettina can clear the snow be herself in 6 hours. After bettina has been working for 3 hours, ken is able to join her. how much longer will it take them working together to remove the rest of the snow.
Any help would be much appreciated. Thank You!
I assume that you know:
. Multiply by (x^2-9) (it's the common denominator) and cancel the equal factors out(?):
. Solve for x. I've got x = -12.
PS: to #7. It's raining here, no snow in sight - and by the way it is very late and I'm afraid that I'll make some silly mistakes. So I leave #7 for someone else.