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Effectus [21]
2 years ago
14

A supervisor wants to know the average number of hours worked by employees in a factory. There are 18 managers, 240 laborers, an

d 54 administrators. Three managers are chosen to participate in the survey. In order for the sample to accurately represent the population, about how many administrators should be chosen?
6
9
18
21
Mathematics
1 answer:
Vinil7 [7]2 years ago
3 0

Answer:

9

Step-by-step explanation:

just too the quiz on edge

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John is going to the store. His house is located 3 miles south and 4 miles east from the store, as shown below. What is the shor
juin [17]

Answer:

5 miles

Step-by-step explanation:

It is a right triangle, with 3 miles down, and 4 miles to the right

the shortest distance would be and southeast line.

Using the Pythagorean theorem, you get:

3^2 + 4^2 = x^2

9 + 16 = x^2

25 = x^2

x = 5

3 0
3 years ago
Dave is taking a algebra ii test and comes across this question: you have two die that you will roll. you will sum up the face v
sammy [17]
He should guess about 34 times. 

When you are rolling two dice there are 36 probabilities. In order to get an 8, there are 5 possibilities.

2 + 6, 3 + 5, 4 + 4, 5, + 3, 6 + 2

Therefore, the chances of an 8 are 5/36. Multiplying this by 250 gives us about 34.

The law of large numbers helps because it says the more rolls that take place, the more likely we are to get close to the expected value. With 250 rolls we should get pretty close.
5 0
3 years ago
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Which set of numbers can represent the side lengths, in millimeters, of an obtuse triangle?
olga_2 [115]

The answer is actually A.

3 0
3 years ago
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My question what is 75 percent of hours
Goryan [66]

Answer:

3/4 hours

Step-by-step explanation:

3/4 = 0.75

6 0
2 years ago
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h(x)=x 2 −1h, left parenthesis, x, right parenthesis, equals, x, squared, minus, 1 Over which interval does h hh have a negative
Semenov [28]

Answer:

(C)−3 ≤ x ≤ 1

Step-by-step explanation:

The average rate of change of function h over the interval a \leq x\leq b, is given by this expression:

\dfrac{h(b)-h(a)}{b-a}

Given the function h(x)=x^2-1 on the interval:− 3 ≤ x ≤ 1

h(1)=1^2-1=0\\h(-3)=(-3)^2-1=9-1=8

The average rate of change:

\dfrac{h(b)-h(a)}{b-a}=\dfrac{0-8}{1-(-3)}=\dfrac{-8}{4}=-2

Therefore, the function has a negative average rate of change over the interval − 3 ≤ x ≤ 1.

CHECK:

(A)Average rate of change of h(x) over the interval − 3 ≤ x ≤ 5=2

(B)Average rate of change of h(x) over the interval 1 ≤ x ≤ 4=5

(D)Average rate of change of h(x) over the interval − 1 ≤ x ≤ 5=4

5 0
3 years ago
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