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fenix001 [56]
3 years ago
10

Help me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
ElenaW [278]3 years ago
7 0
So 20% is 1/5 as a percent.

So 1/5 multiplied by 5 equals 5/5, or 1.

So if 1/5 = 6, then 6 multiplied by 5, or 30, must equal 5/5, or 1.

So the total number of dolls in Amyia's doll collection is 30.
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hjlf
It is used by turning it into a mixed number
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-2.8 repeating as a fraction
Marizza181 [45]
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3 years ago
EXPAND AND SIMPLIFY<br>​
Anit [1.1K]

Answer:

5⁴a²

Step-by-step explanation:

(5³a³)÷5a-¹×5-²a²

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5 0
3 years ago
The standard deviation of a point estimator is the _____. a. standard error b. sample statistic c. point estimate d. sampling er
ivann1987 [24]

The standard deviation of a point estimator is the <u>standard error.</u>

"The point estimate is used to estimate the exact value of any parameter. For example, an internet poll says that 45% of Americans are concerned for the environment."

"Point estimates is a good measure but the problem with this parameter is that the sample of the statistics may vary so that there is a chance of sampling error."

"As the researcher is unable to presume that closeness of the sample statistics parameter with respect to the parameter so researcher refers to calculate the standard error instead of point estimate."

To learn more about standard error here

brainly.com/question/13179711

#SPJ4

4 0
1 year ago
Of the 75% of a group that passed a physical examination only 3/5 passed the additional psychological exam. What fraction of the
Helga [31]
To find the fraction of the grouo that passed both exams, we need to first convert 75% into a fraction:

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We can then mutiply the fraction above by the students who passed the psychological exam:

3/4×3/5
=9/20

Therefore the answer is 9/20.

Hope it helps!
3 0
3 years ago
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