Answer:
y = 3x² + 54x + 240
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
here (h, k) = (- 9, - 3), thus
y = a(x + 9)² - 3
To find a substitute either of the roots into the equation
Using (- 8, 0), then
0 = a(- 8 + 9)² - 3
0 = a - 3 ( add 3 to both sides )
a = 3
y = 3(x + 9)² - 3 ← in vertex form
Expand factor and simplify
y = 3(x² + 18x + 81) - 3
= 3x² + 54x + 243 - 3
= 3x² + 54x + 240 ← in standard form
Answer:
350 he wants 100 so if he withdraws 15 a week for chickfala he would maybe need to get chickfala every 2 weeks?
Step-by-step explanation:
So 3 have no pets, so 25 - 3 = 22 students have a pet.
There are 15 cats and 16 dogs so 15 + 16 = 31.
And then 31 - 22 = 9. The 9 means that 9 students have both pets.
So the probability is 9/25.
sin(8x) cos(3x) - cos(8x) sin(3x)
sin(8x - 3x) = sin(5x)
Answer:
R
H
S
= cos
2
x
Step-by-step explanation: