A. 12*x + 2*y = 90
6*x + 2*y = 60
To write system of equation you just need to sum all solo and ensemble acts and make it equal to how much they will last for.
B. Here we can multiply second equation with negative 1 and add it to first equation.
6x = 30
x = 5
now we replace x in any of 2 equations to get y.
30+2y = 60
2y = 30
y=15
Solo acts are 5 minutes long and ensemble acts are 15 minutes long
Y= Mx+b
In the equation of a straight line,the slope is the number "m" that is multiplied on the x, and "b<span>" is the </span>y<span>-intercept (that is, the point where the line crosses the vertical </span>y<span>-axis).</span>
Your answer is 1.2.
I hope I helped you! :)
Answer: 
Step-by-step explanation:
Given
Sean paints
of a fence in 1 hour
Sean paints
part less in the second hour
So, fraction he paints in the second hour = 
Paint in 2 hours = 
=
No, he did not finish his job
Answer:
one real solution
no real solution
one real solution
Step-by-step explanation: