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nekit [7.7K]
3 years ago
11

What are the answers ​

Mathematics
1 answer:
e-lub [12.9K]3 years ago
8 0

Answer:

i need this troooooooo

Step-by-step explanation:

You might be interested in
The numbers 4, 8, 12, and 22 are all multiples of 4.<br>t or f
Romashka-Z-Leto [24]
The answer is false 22 isn’t a multiple of 4
6 0
3 years ago
Find the equation of a line parallel to y=2x+1 that contains points (14, 3)
Norma-Jean [14]
The equation is y=2x-25
3 0
3 years ago
In a study published on January 31, 2011 in The Proceedings of the National Academy of Sciences, researchers randomly assigned 1
Kaylis [27]

Answer:

d.

Step-by-step explanation:

Hello!

The objective of this test is to know if aerobic exercise modifies hippocampus activity. A random sample of 120 elderly men and women was taken and divided into two groups.

Group 1: Walked around a track three times a week.

Group 2: Did a variety of less aerobic exercises, including yoga and resistance training with bands.

After a year their brains were scanned showing that group 1 had an increase of 2% in their hippocampus and group 2 showed a decrease of 1.4%

a. True, this type of observational study can be the prelude to a more formal statistical study.

b. True, the explanatory variable is "type of exercise", it's the variable that the investigator suspects influence the hippocampus volume.

c. True, the objective of this experiment is to test if there is any modification on hippocampus volume, that's why the volume of the hippocampus was measured, before and after a year of exercise.

d. False, this is an observational study, you cannot establish a causal relationship between the two variables. Just inform you that there seems to be an association. To be able to generalize the results to all elderly population you need a more formal statistical experiment to support your conclusions.

I hope it helps!

5 0
3 years ago
I need help please!!:)
asambeis [7]

Answer:

No bcuz its not on the line

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
a 55 ft long drainage pipe must be cut into two pieces before installation. one piece is two-thirds as long as the other. find t
Hunter-Best [27]

Answer:

33 feet

22 feet

Step-by-step explanation:

Let the longer piece be x

Therefore the shorter piece is (2/3)x

x + (2/3)x  = 55                  Combine the left 2 terms.

(3/3)x + (2/3)x = 55           Add  

(5/3)x = 55                        Multiply both sides by (3/5)

(3/5) * (5/3)x = (3/5)*55

x = 33

The larger piece is 33 feet

The smaller piece is (2/3) * 33 = 22 feet

5 0
3 years ago
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