The standard form of a quadratic equation is f(x) = ax^2<span> + bx + c. Looking at the given choices:
</span><span>A. f(x) = −8x^3 − 16x^2 − 4x
B. f(x) = x^2 + 2x − 5
C. f(x) = 1
D. f(x) = 0x^2 − 9x + 7
Among the choices, the only equation that follows the standard form is B.</span>
4x-28=16
move -28 to the other side
sign changes from -28 to +28
4x-28+28=16+28
4x=16+28
4x=44
divide both sides by 4 to get x by itself
4x/4=44/4
x=11
Answer:
D. 11
200 is greater than or equal to(use the sign) 100+5x
I think this is it. Hope it helps :)
The midpoint between points A and B is :
M = ( 1 , −4 )
Answer:
B. 14 +7√2
Step-by-step explanation:
The lengths of the two legs are the same: 7.
The length of the hypotenuse is √2 times the length of a leg, so is 7√2.
The perimeter is the sum of the lengths of the sides:
P = 7 + 7 + 7√2
P = 14 +7√2 . . . . . matches choice B