Answer:
A option is
Correct
Step-by-step explanation:
X2-4x-4x+16=0
(X-4)(x-4)=0
X=4 or x=4
Answer:
C
Step-by-step explanation:
Under a reflection in the y- axis
a point (x, y ) → (- x, y ) , then
A(- 1, 3 ) → A'(1, 3 ) → C
Answer:
Bill: 8 years
Hoang: 13 years
Step-by-step explanation:
Let's say Hoang has been a nurse for H years and Bill has been a nurse for B years.
Hoang has been a nurse for 5 years longer than Bill. This means that B + 5 = H
Next, 3 years ago, she had been there twice as long.
(B-3) and (H-3) represent Bill and Hoang 3 years ago respectively.
(B-3) * 2 = (H-3)
We thus have two equations
B+5 = H
(B-3) * 2 = H-3
Substitute B+5 for H in the second equation
2*B - 6 = B+5-3
2B-6 = B+2
add 6 to both sides to put all the constants on one side
2B = B + 8
subtract B from both sides to isolate the variable
B = 8
H = B+5 = 13
The correct answer would be 3 +/-

In order to solve for this you must first get the equation equal to 0.
x^2 + 6x + 9 - 6 ----> simplify like terms
x^2 + 6x + 3
Now knowing this we can use the coefficients of each one in descending order of power as a, b and c.
a = 1 (because it is the coefficient to x^2)
b = 6 (because it is the coefficient to x)
c = 3 (because it is the end number)
Now we can plug these values into the quadratic equation.


3 +/-

And those would be your two answers.
Interval C = Linear constant