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3 years ago

What is the midpoint of the segment below?

Mathematics

1 answer:

EleoNora [17]3 years ago

8 0

Answer:

B(-1,1) so you can find that when you calculation for the basic principles

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Keystones tomorrow please help. Last options are B.400 C.600 D.2500

Basile [38]

Answer:

b = 600 ft.

Step-by-step explanation:

3 0

3 years ago

To select a __________ random sample, first classify the population into groups of similar individuals, then choose a separate S

Lina20 [59]

Answer:

To select a stratified random sample, first classify the population into groups of similar individuals, then choose a separate SRS in each group and combine these SRS to form the full sample

Step-by-step explanation:

Stratified random sampling involved dividing the population into small groups of similar individuals (called strata) and then from among those groups, a stratified random sample is selected and then, all these samples are combined to form the full sample. Hence, the missing word in this sentence is stratified.

8 0

3 years ago

An employer interviews 12 people for four openings at a company. Five of the 12 people are women. All 12 applicants are qualifie

MA_775_DIABLO [31]

Answer:

a) The employer can fill the four positions in 495 ways.

b) The employer can fill the four positions in 210 ways.

Step-by-step explanation:

The order is not important.

For example:

Selecting John, Laura, Mary and Tre'Davious is the same as selecting Laura, John, Mary and Tre'Davious.

So we use the combinations formula to solve this problem.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

(a) the selection is random

There are 12 people, and 4 are selected. So

$C_{12,4} = \frac{12!}{4!8!} = 495$

(b) exactly two selections are women?

There are 7 men and 5 women. We want to select 2 men and 2 women. So

$C_{7,2}*C_{5,2} = \frac{7!}{2!5!}*\frac{5!}{2!3!} = 210$

3 0

4 years ago

What number is 20 less than 150% of 80

patriot [66]

Answer:

100

Step-by-step explanation:

"What number" means a variable, like x.

"Is" means equals.

"Less than" means subtracted from.

Percent means out of 100.

"Of" means multiplication.

x = (150/100) 80 - 20

x = 120 - 20

x = 100

5 0

4 years ago

9. Round 45.2374 to the nearest tenth.

Alexxx [7]

Answer:

45.2

Step-by-step explanation:

the tenths is the first number to the right after the decimal

7 0

3 years ago