Answer:
744
Step-by-step explanation:
12a^2 + 4b
Plug-in:
12(8)^2 + 4(-6)
12(64) + 4(-6)
768 - 24
744
Answer:
Associative Property
Step-by-step explanation:
The brackets moved, so it would be associative
Answer: for the on your own the equation is y=2x for the outputs on the other thing just add the numbers up
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given


Required
The area
This is calculated as:


Open brackst


Open bracket

Answer:
7 mph
Step-by-step explanation:
If b is the rate of the boat, and s is the rate of the stream, then:
b − s = 4
b + s = 10
Solve the system of equations with substitution or elimination. Using elimination, add the equations together:
2b = 14
b = 7
The boat's rate is 7 mph.