Answer:
D would be the answer
Step-by-step explanation:
since you have a positive 12 at the end of your equation(thats your y intercept 0,12) then you can eliminate A, B. Next you would plug in (-3,0) in your equation and see if it would work and it did so thats your answer. ( i know thats not the formal way to do it but its a shortcut i like to use ;)
Answer:
True
Step-by-step explanation:
First let's understand the definition of circle.
A circle is a round plane figure. It is set of points moving from the center at equal distance. If we connect the points we get a circle.
The distance from the center and any points on the circle is called radius.
In other words, a line segment that is connecting the center of a circle and any point on the circle is called radius.
Radius is half of the diameter.
R = D/2, where D is the diameter of the circle.
Therefore, the statement is true.
B.x2 + 4
C.9x2 – x – 36
D.25x2 – 36
Answer
D.25x2 – 36
Explanation
A. x² – 16x + 64
product = 64
sum = -16
factors: -8 and -8
x² – 16x + 64 = x² - 8x - 8x + 64
= x(x - 8) - 8(x - 8)
= (x - 8)(x-8) = (x-8)² ⇒ Not a difference of squares
B.x² + 4 = (x² + 2²) ⇒ Not a difference of squares
C.9x² – x – 36
product = - 324
sum = -1
Factors: none
9x² – x – 36 ⇒ Has no perfect roots.
D.25x² – 36
25x² – 36 = (5x)² - 6² ⇒ This is the difference of squares.
( ˆ5 is the exponent for 5 )