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Alenkinab [10]
2 years ago
5

What is the value of -6 x 2 .25

Mathematics
2 answers:
tekilochka [14]2 years ago
8 0

Answer:

-13.5

Step-by-step explanation:

-6 x 2.25 = -13.5

Readme [11.4K]2 years ago
3 0

-13.5

the answer is -13.5

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Andrea is told that the means of two groups in a study were statistically significant. She knows the means and standard deviatio
salantis [7]

Answer:

Cohen's D

Step-by-step explanation:

Cohen's D is a statistic that measures effect size. It shows standardised difference between 2 means.

Effect size is defined as how large the effect of a something is or its magnitude.

Cohen's D works effectively when the sample is >50 (that is for large samples). However a correction factor can be used to make results from small samples more accurate

The formular for Cohen's D is:

D = (mean1 - mean2) ÷ (√({standard deviation1}^2 + {standard deviation 2}^2)/2)

This is the most appropriate method in the given scenario

5 0
3 years ago
An athlete ran 800 meters in 160 seconds. What was his rate in meters per minute? Enter your answer in the box.
FromTheMoon [43]

The athlete's average speed was 300 meters/minute.

<h3>How to calculate the speed of the athlete?</h3>

To calculate the speed of the athlete we must perform the following operations.

Divide the distance into the total time:

  • 800m ÷ 160sec = 5m/sec

Transform the value from seconds to minutes, for which we must multiply 5 by 60 because each minute is made up of 60 seconds.

  • 5m/sec × 60sec = 300m/min

According to the above, the average speed of the athlete is 300m/min.

Learn more about speed in: brainly.com/question/7359669

3 0
1 year ago
I don’t get this can someone explain this
LekaFEV [45]

Answer:

15.7 units

Step-by-step explanation:

AB = 6, BC = 3

Therefore by Pythagoras theorem

AC = \sqrt{45}

perimeter \: of \:  \triangle \: ABC \\  = 6 + 3 +  \sqrt{45}  \\  = 9 + 6.70820393 \\  = 9 + 6.7 \\  = 15.7\: units

3 0
3 years ago
Which prism has a greater surface area? 2 prisms. A rectangular prism has a length of 12 inches, height of 8 inches, and width o
baherus [9]

Answer:

Step-by-step explanation:

ANSWER IS The rectangular prism has a greater surface area by 72 square inches. Sorry if it is wrong my kid was bothering me.

3 0
3 years ago
Read 2 more answers
MATH math can you help me pls
Alexxandr [17]

Answer: A = k =250

B= y,x=0.5

Step-by-step explanation: Find the constant of variation.

7 0
2 years ago
Read 2 more answers
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