Answer:
4x^2 -8
Step-by-step explanation:
f(x)=3x^2-9
g(x)=x^2+1
(f+g)(x)=3x^2-9 +x^2+1
Combine like terms
= 4x^2 -8
I'm sorry I'm too lazy to read all of that. However, I did get the main point. The river was going at 3 mph. Since he wanted to travel 10 miles upstream and downstream, you would have to subtract 20 by 3. This would mean he was going at a speed of 17 mph.
Answer:
x=4
Step-by-step explanation:
3x=5+7
7+5=12
12/3=4
x=4
Hope this helps!!
The first digit is the largest of the 3, 9 is > 4 and 3
The 2nd is NOT the smallest 4>3
The third digit is NOT even (3 is an odd number)
The first digit IS ODD (9 is an odd number)
Answer:
a-yes
b-3
Step-by-step explanation:
the numbers are all 3 apart
