Answer:
1/4 inches
Step-by-step explanation:
Answer: y = - 9
Step-by-step explanation:
Two lines are said to be perpendicular if the product of their slope = 1 , that is , if the slope of the first line is and the slope of the second line is , then = , that is :
X = -1
The line given is ; 2x + y = - 4
Make y the subject of the formula so that the equation will be in slope - intercept form ; y = mx + c
that is
y = -2x - 4
comparing with the equation of line y = mx + c , it shows that = -2
Since the second line is perpendicular to this line , it means =
That is
=
Using the formula y - = m ( x - ) to find the equation of the line
= -8
= 2
substituting into the equation
y - (-8) = ( x - 2)
y + 8 = ( x- 2)
2(y+8) = x - 2
2y + 16 = x - 2
2y = x - 2 - 16
2y = x - 18
y = - 18/2
y = - 9
We want to solve
x² + 8x + 7 = 0
Factorize the left side.
x² + 8x + 7 = (x + 1)(x + 7)
Therefore
(x + 1)(x + 7) = 0
When (x + 1) = 0, obtain x = -1.
When (x + 7) = 0, obtain x = -7.
The solutions are x = -1 and x = -7
Answer: x = -7 and x = -1.
Answer:
A variable
Step-by-step explanation: