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4vir4ik [10]
2 years ago
5

What is equal to21/28

Mathematics
2 answers:
choli [55]2 years ago
6 0

Answer:

<h2><u><em>3/4</em></u></h2>

Step-by-step explanation:

what is equal to21/28

3/4

21:28= 0.75

3:4= 0.75

or semplify 21/28 to 3/4 (divide both numbers by 7)

Marina CMI [18]2 years ago
3 0

Answer:

In a simplified version it can be expressed as 3/4.

Hope that helped. x

Step-by-step explanation:

21 divided by 7 is 3

28 divided by 7 is 4.

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-----40 POINTS--------
andrey2020 [161]

Proof

Provide the missing reasons for the proof of part of the triangle midsegment theorem.

Given: K is the midpoint of MJ.

           L is the midpoint of NJ.

Prove: MN = 2KL

The complete answer is attached in the diagram below.

The complete answer for the missing reasons is attached below in the diagram.

Please check the figure.

Keywords: statement, proof, reason

Learn more about statement, reason and proof from brainly.com/question/11081915

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6 0
3 years ago
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A survey of 132 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take
ddd [48]

Answer:

For 90% CI = (0.428, 0.572)

For 98% CI = (0.399, 0.601)

The confidence interval (and Margin of error) reduces when 90% confidence level is used compared to when 98% confidence level is used.

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

p+/-z√(p(1-p)/n)

Given that;

Proportion p = 66/132 = 0.50

Number of samples n = 132

Confidence level = 90%

z(at 90% confidence) = 1.645

Substituting the values we have;

0.50 +/- 1.645√(0.50(1-0.50)/132)

0.50 +/- 1.645√(0.001893939393)

0.50 +/- 0.071589436011

0.50 +/- 0.072

(0.428, 0.572)

The 90% confidence level estimate of the true population proportion of students who responded "yes" is (0.428, 0.572)

For 90% CI = (0.428, 0.572)

For 98% CI = (0.399, 0.601)

The confidence interval (and Margin of error) reduces when 90% confidence level is used compared to when 98% confidence level is used.

7 0
3 years ago
HELP PLEASE! I don't understand and have been stuck on this problem for a whole hour. Please explain. Also, none of the answers
Lyrx [107]
The altitude is the mean proportional between the left and right parts of the hyptenuse

\cfrac{FI}{GI} =  \cfrac{GI}{HI} \ \ \Rightarrow \ \  \cfrac{FI}{15} =  \cfrac{15}{16} \ \ \Rightarrow \ \ FI= \cfrac{15 \cdot 15 }{16} \approx  14.1

Answer: 14.1
5 0
3 years ago
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The function f(x) = -3/4x^2 +9/2x models, in feet, the shape of a doorway arch on a historic building. How high is the
slamgirl [31]
Is has to be 7.25 feet.
3 0
3 years ago
What is the length of ab and bc ? a= (1,-3) b= (3,-1) C= (5,-3)
ddd [48]

Answer:

the length is (1,3

Step-by-step explanation:

the length is 3,1

5 0
3 years ago
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