Answer:
y = 15 hour - 3 hours/day x days
y = 15 - 3x
y-intercept = 15 - 3(0)= 15 which is the amount of volunteer hours she must complete at day 0.
0 = 15 - 3x
3x = 15
x = 5 (Number of days she would have to volunteer)
Equation: y = 15- 3x
Step-by-step explanation:
Answer:
- no real solutions
- 2 complex solutions
Step-by-step explanation:
The equation can be rearranged to vertex form:
x^2 -4x = -5 . . . . . . . . . subtract 4x
x^2 -4x +4 = -5 +4 . . . . add 4
(x -2)^2 = -1 . . . . . . . . . show the left side as a square
x -2 = ±√-1 = ±i . . . . . . take the square root; the right side is imaginary
x = 2 ± i . . . . . . . . . . . . . add 2. These are the complex solutions.
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<em>Comment on the question</em>
Every 2nd degree polynomial equation has two solutions. They may be real, complex, or (real and) identical. That is, there may be 0, 1, or 2 real solutions. This equation has 0 real solutions, because they are both complex.
Answer:
and 
Step-by-step explanation:
-equation 1
-equation 2
Solving the equation 1 to get the value of
To solve such type of equations that have two unknown variables, find the value of one variable in terms of the other from any one of the equation and put the value in the second equation which will give the value of both the variables
Solving Equation 2 to find x
equation 3
Putting this value of x in the equation 1
,
Putting the value of y in equation 3 to find the value of x
2(-6^2)+5(2^2)
2(36)+5(4)
72+20
92
