Answer:
A) 60
B) 72/300
C) 150
Step-by-step explanation:
A) P(green) = ⅕
⅕ × 300 = 60
B) purple: 72
45+37+52+94+72 = 300
Therefore, 72/300
C) 1000 × (45/300)
150
4hrs, I think, because 20 divided by 5 is 4.
Answer:
What percentage of pick-up truck drivers want their next vehicle purchase to be another pick-up truck?
Should the speed limit be decreased on the highway connecting two large cities?
How many pedestrians would use a walkway built over a busy road?
Step-by-step explanation:
We use samples when using an entire population is not feasible.
It is not reasonable to ask every pick-up truck driver what they want their next purchase to be; there are too many owners of pick-up trucks. This means we should use a sample.
Many people drive a highway that connects two large cities. It is not reasonable to survey every person that drives it, so we should use a sample.
On a busy road, we may have many pedestrians; this means we should use a sample instead of the entire population.
Answer:
D. 3x^2 + 3/2 x - 9
Step-by-step explanation:
(f+g)(x) = f(x) + g(x)
... = ((1/2)x -3) + (3x² +x -6) . . . . . substitute for f(x) and g(x)
... = 3x² +x(1/2 + 1) + (-3 -6) . . . . . combine like terms
... = 3x² +(3/2)x -9 . . . . . matches selection D
Answer:
Number of students who received A grade on the second test = 36
Step-by-step explanation:
Given that:
Number of students who received A grade on third test = 54
This is 150% of the students who received A on the second test.
Let,
x be the number of students who received A on the second test.
150% of x = 54
1.5x=54
Dividing both sides by 1.5
Hence,
Number of students who received A grade on the second test = 36
