We are given:

First step is to get rid of fractions. We start by multiplying both sides by a.

Now we cancel a on right side and we multiply both sides by c.

After canceling c on the right side we are left with:
Answer:
Option C is correct.
Step-by-step explanation:
y = x^2+4x+5
We need to find the vertex of the above equation.
The above equation represents the parabola.
The slope of parabola can be found by taking derivative of the given equation
dy/dx = 2x+4
The slope of the parabola at the vertex is zero SO,
2x+4 = 0
2x = -4
x = -4/2
x = -2
Putting value of x =-2 to find the value of y
y = x^2+4x+5
y =(-2)^2+4(-2)+5
y = 4-8+5
y =9-8
y = 1
So, the vertex is (-2,1)
Option C is correct.
Answer:
2/4 +6/8 =5/4
Step-by-step explanation:
I suppose you want to know the distance to grandmother's house....
(2 3/5)60+(1 1/5)30
(13/5)60+(6/5)30
780/5+180/5
960/5
192 miles