To find the amount of solutions, you must find the discriminant. The discriminant is b^2 - 4ac. Number 6 has 2 solutions and number 7 has 1 solution.
Y=0.6x+5 is the slope of a line parallel to the line -3x+5y=-10
There are two methods I know. hope it'd help :)
Answer:
C. 5/3 (5 sqrt 3) (8.66...)
Explanation:
You would use the SohCahToa to find out side x.
First, label your sides (10 is hypotenuse, x is the opposite, and blank side is the adjacent).
Second, figure out which part you have to use (Sin, Cosine, or Tangent). A good way to tell is of you have the missing side on top of the fraction, makes things easier.
Third, once you figure that out then plug stuff in...
Sin(theta) = O/H
Sin(60) = X/10
10sin(60) = X
8.66... = X
Answer:
Option 2, 3, 4
Step-by-step explanation:
It cannot be the 1st option because a linear function doesn't have an 
and adding an x to an x will not make it squared. ax + by = c is the linear equation.
It can be the 2nd option because the quadratic formula is f(x) = a + bx + c and the middle portion could cancel when adding 2 together.
It can be option 3, because f(x) = a + bx + c plus ax + by = c could give you the resulting function f(x) = -3 +5
It can be option 4 because multiplying ax + by = c by ax + by = c would give you an .
It cannot be option 5 because a + bx + c multiplied by a + bx + c would give you a function with 
