A=148°
B=148°
Step-by-step explanation:
180-38=148°
because A and B are equal, they're both 148°
"h and k cannot both equal zero" -- yes, it can. if the vertex of a parabola is at (0, 0), there's nothing incorrect/invalid about that!!
"k and c have the same value" -- k and c do not have the same value. "k" is the y-value of the vertex and c is the constant in your quadratic equation, and the constant is not necessarily the y-value.
"the value of a remains the same" -- this is true. the a's in your equations are the same values, because the a-value is the coefficient of the x-variable in both equations. y = a(x - h)^2 and y = ax^2 -- both of these have a applying to your x-variables.
"h is equal to one half -b" -- this isn't true. the formula for calculating the x value of the vertex (h is the x-value of the vertex) is h = (-b/2a). -b/2a is not the same as one half -b because this answer choice doesn't involve the a-value.
Answer:
D
Step-by-step explanation:
Slope: (2-1)/(-3-2) = -⅕
y = (-⅕)x + c
1 = (-⅕)(2) + c
c = 7/5
y = (-1/5)(x) + (7/5)
5y = -x + 7
x + 5y = 7
-8p is the answer my dude
Substitute x = y + 1 into 2x - 3y = -1
2 - y = -1
Solve for y in 2 - y = -1
y = 3
Substitute y = 3 into x = y + 1
x = 4
Therefore,
<u>x = 4</u>
<u>y = 3</u>
