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svlad2 [7]
3 years ago
8

A researcher is running a study to determine how employees of a certain company commute to work. In order to complete the study,

the researcher selects a sample of 300 employees of this company and records their means of arrival on a specified day.
If the researcher also wants to consider the age of the employee as an additional factor in this study, what would this be considered?

a) Matching

b) Placebo Effect

c) Blocking

d) Stratifying

e) Control
Mathematics
1 answer:
storchak [24]3 years ago
4 0

Answer:

Placebo Effect would be considered.

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Quadrilateral ABCD is a rectangle. If the coordinates of A
Neporo4naja [7]
<h3>Answer: A)  -2</h3>

==========================================

Explanation:

Let's find the slope of line AB

m = (y2-y1)/(x2-x1)

m = (2-7)/(-6-4)

m = (-5)/(-10)

m = 1/2

The slope of line AB is 1/2

To get the slope of BC, we flip the fraction and the sign to get the perpendicular slope

1/2 becomes -2/1 or simply -2

----------

Slope of AB = 1/2

Slope of BC = -2

Notice how the two perpendicular slopes multiply to -1.

We know they are perpendicular because the four angles of any rectangle are always 90 degrees each.

5 0
2 years ago
If y=3x+ 2 were changed to y=3x+8 how would the graph of the new function compare with the first one?
Alex787 [66]
D)it would be shifted up
3 0
3 years ago
210÷5 first u break it down and divide it step by step and it =42
Artyom0805 [142]
That is the correct answer
6 0
3 years ago
Jane has 3 bags of apples. Each bag has a different number
larisa [96]

Answer:

8 with a remainder of 4

step by step explanation:

6 0
3 years ago
Read 2 more answers
What is the answer to these question?
Natali5045456 [20]

Answer:

2.  y = 7/2 x -2

3.   y = 3/4x-1

Step-by-step explanation:

points (0,-2)  (4,12)

slope = (y2-y1)/(x2-x1)

slope = (12--2)/(4-0)

    = (12+2)/4

   = 14/4 = 7/2

the slope is 7/2 and the y intercept is -2

y = mx+b

y = 7/2 x -2


points (0,-1)  (4,2)

slope = (y2-y1)/(x2-x1)

slope = (2--1)/(4-0)

    = (2+1)/4

   = 3/4

the slope is 3/4 and the y intercept is -1

y = mx+b

y = 3/4x-1

3 0
3 years ago
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