Answer:
Try 1 1/6
Step-by-step explanation:
1.

or if you mean (3x^3+5x^2+3x-7)+(8x-6x^2+6):

2.

Answer:
10
Step-by-step explanation:
divide the numbers for a anser
Answer:
4.5 minutes
Step-by-step explanation:
first convert 3/4 to a decimal so you can multiply it which would be .75
so then .75 times 6=
4.5
2/5*15/17*3/4
= 2*15*3/5*17*4
= 2*15*3/340
= 90/340
=90/34
hope this helps hope I'm right :)