Answer:
all the time
Step-by-step explanation:
Let

be the amount of time it takes to perform an arm routine and

be the amount of time it takes to perform an abdominal routine. We see:


Subtracting the second equation from the first gives

. Substituting gives

, so

and

.
Thus, an arm routine takes ten minutes and an abdominal routine takes thirty minutes.
Answer:
x + 4 < 8
- 4 -4
x < 4
Step-by-step explanation:
So, Basically anything less than 4 is a solution for this equation.
Answer:
-12x^2 + 11xy - 2y^2
Step-by-step explanation:
I’m sorry but I don’t know i would honestly like to help u but don’t know