13.5/3 = 4.5
He hiked for 4.5 hours.
Answer:
Step-by-step explanation:
(6x+1)(9x-23)= 6x(9x-23)+1(9x-23)
= 54x²-138+9x-23
= 54x²+9x-161
Answer:
10
Step-by-step explanation:
It’s a because the total of x and y is 6.80 and the second equation is how much each are and the total being 7.
Brainliest?