I think they are similar because they are both solving for a certain number (sum, product quotient)
No, because you would have to simplify like terms. Which the simplest form would be
5x-4
Ill only answer the first 2 question since its only 6 points....
A. (21,3),(12,6)
B. -1/3
Work:
6-3/12-21
-3/9
-1/3
Hope this helps out
Answer:
10 feet
Step-by-step explanation:
a^2+b^2=c^2
15^2+B^2=365
225+b^2=365
b^2=100
b=10