Answer:
It's just division.
Step-by-step explanation:
Vondra would have to do 77 haircuts per month to pay $308 to either salon.
308 / 4 = 77; 77 * 4 = 308
A account 8% B account 12%
A+$450 = B (1)
Ax8% +Bx12%= $220
Ax0.08 + Bx0.12 = 220
Now we replace (1) on B:
Ax0.08 + (A+450)x0.12 = 220
Ax0.08 + Ax0.12 + 54 = 220
Ax0.2 = 166
A= 830.
Now we replace the value of A on equation (1):
830 + 450 = B
B = 1280
Answer: Ax+By=C, y=kx
Step-by-step explanation:
Ax+By=C is the standard form of a line.
y=kx is a proportional line, which is just a linear equation without the intercept.
Answer :
Vertex form
a { ( x + b/2a )^2 - ( b/2a)^2 } + c
We are given than a quadratic function in standard form
ax^2 + bx + c
We have to explain steps which is necessary for converting quadratic x function in standard form to vertex form
We are explaining steps for converting a quadratic function into vertex form with the help of example
Suppose we have a quadratic function
2x^2 + x - 1
Taking 2 common from the given function the we get
2( x^2 + x/2 ) - 1
Now, we convert the equation of the form
2{ (x)^2 + 2 x x x1/4 + 1/16 - 1/16 } - 1
2{ ( x + 1/4)^2 - 1/16 } - 1
2{ ( x + 1/4 )^2 - (1/4)^2 } - 1
Vertex form = 2{ ( x + 1/4 )^2 - (1/4)^2 } - 1
Hence , the vertex form =
a { ( x + b/2a )^2 - ( b/2a )^2 } + c
