Answer: x
Step-by-step explanation:
The inverse undos any changes to x, reversing those changes will leave x. Ex: f(x)=x+2. The inverse (from replacing x with y and y with x and solving for y) is h(x)=x-2. Plugging x+2 into h(x) (composition of functions) results in x. 2 and -2 cancel out.
Answer:
Gimmie cat. Note the tnt block in the back
Step-by-step explanation:
Answer: the width of the rectangle
= 31feet.
Step-by-step explanation:
Perimeter of a triangle = 2( l + b)
let the width = xfeet
The length = 2x feet.
Substitute for this in the equation above,
2( 2x + x ) = 186
2(3x) = 186
Divide by 2 through
3x = 93
Divide by 3
x = 31feet. Therefore, the width of the rectangular = 31feet.
Check.
Since the length is twice the width,
L = 31 x 2
= 62feet.
Put that into the formula above
2( 62 + 31 )
2 x 93
= 186 which is the perimeter of the rectangle.
Answer: 21
Step-by-step explanation: 84/4 = 21
Answer:
-12x = y^2
Step-by-step explanation:
Notice that the vertex and the focus are both located on the horizontal line y = 0 (that is, on the x-axis).
Because the focus is to the left of the vertex, we know that the parabola opens left.
The distance between focus and vertex is 3 units.
We'll adapt this equation: 4px = y^2. Here p is -3:
4(-3)x = y^2, or
-12x = y^2