Answer:
Step-by-step explanation:
a) What point would be the Center of the circle C (above)? C
b) What line segment would be the Radius? BC
c) What line segment would be the Diameter? AD
d) What line Color is representing the Circumference? Dark Blue/Black?
e) What number represents the ratio of Circumference/Diameter? π
f) if the radius is 5 meters, what is the distance of the circumference?
5π ≈ 15.707... m
You want 9x^2 + bx + 9a to be a perfect square trinomial. Note that 9 x 2 is incorrect and should be written as 9x^2, where "^" represents "exponentiation."
What about a? Are we supposed to find a also?
One way in which to do this problem is to factor 9 out of the trinomial:
9 (x^2 + (b/9)x + a )
Concentrate now on making x^2 + (b/9)x + a into a perfect square trinomial.
x^2 + (b/9)x + a
Take half of the coefficient (b/9) and square the result: [(b/9)/2]^2 = b^2/81.
Then, x^2 + (b/9)x + b^2/81 - b^2/81 + a.
The above quadratic expression can be re-written as
(x + b/9)^2 - b^2/81 + a. This is a perfect square trinomial if
-b^2/81 + a = 0. Solve for b: b^2/81 = a,
b/9 = sqrt(a)
b = 9 sqrt a
128, -512, 2048
Multiply by -4 to get each new term
Whats the question suposed to say
Answer:
D) 4
Step-by-step explanation:
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