1b.
To fill the chart..
X | -2 | 0 | 1 |
Y | -1 | 3 | 5
answer: a 13 units. its 13 units bc 13+3=16 soooooooooooo yeahhhhhhhh
Answer:
D
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
To obtain this form use the method of completing the square.
Given
f(x) = - 0.6x² + 4.2x + 240 ← factor out - 0.6 from the first 2 terms
= - 0.6(x² - 7x) + 240
To complete the square
add/ subtract ( half the coefficient of the x- term)² to x² - 7x
f(x) = - 0.6(x² + 2(- 3.5)x + 12.25 - 12.25 ) + 240
= - 0.6 (x - 3.5)² + 7.35 + 240
= - 0.6(x - 3.5)² + 247.35
with vertex = (3.5, 247.35 )
The maximum value is the y- coordinate of the vertex
Then
f(x) = - 0.6(x - 3.5)² + 247.35 has a maximum value of 247.35
This problem can be solve by using
ration and proportion, since you want to enlarge the picture by not distorting
the image, the new dimensions should be in proportion with the old one.
Let x be length of the image
(5/40 = (x/5)
X = 5(5/4)
<span>X = 6.25 in</span>
