Answer:
Step-by-step explanation:
y ∝ x^2
Introducing the proportionality constant, we have
y = kx^2
Given : y= 18 when x = 3
substitute the given values in order to get the constant
i.e 18 = k x 3^2
18 = 9k
k = 2
therefore the formula connecting x and y
⇒ y = 2x^2
To find y if x is 4, just substitute x = 4 into the formula connecting x and y
i.e y = 2 x 4^2
= 2 x 16
= 32
Answer:
126
Step-by-step explanation:
A group of store managers must assemble 280 displays for an upcoming sale.
Displays assembled in first hour = 25 percent of the displays =
Displays assembled in first hour=
Remaining displays =280-70= 210
We are given that 40 percent of the remaining displays during the second hour
Displays assembled in second hour=
Displays assembled in first hour and second hour = 70+84=154
Remaining displays = 280-154 = 126
Hence 126 of the displays will not have been assembled by the end of the second hour
The sample proportion is a point estimate of the population proportion. Therefore we need to convert the given percentage to a decimal fraction to find the best point estimate.
35/100 = 0.35
The best point estimate is 0.35.
Answer:
C: F(x)=x^2-0.5
Step-by-step explanation:
When the x is squared it's a parabola. A linear graph is shaped like a straight line, while a parabola is curved inward. I have included a graph of what that function would look like (tap/click on it to see the full graph.)