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
Answer:
34.086
Step-by-step explanation:
calculator
Answer:
20/27
Step-by-step explanation:
2/3 is the dividend,
9/10 is the divisor,
20/27 is the quotient.
Remember: 2/3 divided by 9/10
2/3 ÷ 9/10 = 2/3 x 10/9. Hence, instead of performing the division, multiplying 2/3 with the reciprocal of 9/10 is the easiest method to find what is 2/3 divided by 9/10 in fraction form.
[RevyBreeze]
Answer:
0
Step-by-step explanation:
If you multiply anything by zero, it would be zero.
ANSWER:
0.1347 ROUNDED to the nearest tenth is 0.1
Step-By-Step Explanation:
0.1347 rounded to the nearest thousandth is 0.135 and 0.135 rounded to the nearest hundredth is 0.14 so because the value of the digit in the hundredths place is 4, you round your answer to the nearest tenth of 0.1
