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Georgia [21]
2 years ago
8

NO files please and thank you. Want an explanation please In a survey, 25% of students reported that they wrote their notes with

a pencil. The results were reported to be within 3% accuracy. What is the maximum and minimum percent of students who write their notes with a pencil?
Mathematics
1 answer:
polet [3.4K]2 years ago
5 0

The maximum and minimum percent of students who write their notes with a pencil are 22% and 25%, respectively

<h3>Survey</h3>

The survey results given as:

Pencil = 25\% --- the proportion of students reported that they wrote their notes with a pencil

Accuracy = 3\%

<h3>Range</h3>

The range is then calculated as:

Range = Pencil \pm Accuracy

<h3>Minimum</h3>

So, we have:

Minimum = Pencil - Accuracy

This gives

Minimum = 25\% - 3\%

Minimum = 22\%

<h3>Maximum</h3>

Also, we have:

Maximum = Pencil + Accuracy

This gives

Maximum = 25\%+ 3\%

Maximum = 28\%

Hence, the maximum and minimum percent of students who write their notes with a pencil are 22% and 25%, respectively

Read more about range at:

brainly.com/question/17025675

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What 2 fingers should you use to properly check your pulse?
lesya692 [45]

Your middle finger and index/pointer.

8 0
3 years ago
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(7)(8)(9)<br><br> Geometry<br><br> Check Ans<br><br> 7) s = 15<br> 8) y = 64 x = 99<br> 9) 96
Katyanochek1 [597]
Problem 7: Correct
Problem 8: Correct
Problem 9: Correct

The steps are below if you are curious

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

Problem 7

S = 180*(n-2)
2340 = 180*(n-2)
2340/180 = n-2
13 = n-2
n-2 = 13
n = 13+2
n = 15

I'm using n in place of lowercase s, but the idea is the same. If anything, it is better to use n for the number of sides since S already stands for the sum of the interior angles. I'm not sure why your teacher decided to swap things like that.

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

Problem 8

First find y
y+116 = 180
y+116-116 = 180-116
y = 64

which is then used to find x. The quadrilateral angles add up to 180*(n-2) = 180*(4-2) = 360 degrees
Add up the 4 angles, set the sum equal to 360, solve for x

x+y+125+72 = 360
x+64+125+72 = 360 ... substitution (plug in y = 64)
x+261 = 360
x+261-261 = 360-261
x = 99

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

Problem 9

With any polygon, the sum of the exterior angles is always 360 degrees

The first two exterior angles add to 264. The missing exterior angle is x
x+264 = 360
x+264-264 = 360-264
x = 96

6 0
3 years ago
Please help me with this question URGENT PLEASE ANSWER THIS MATH QUESTION
lesya [120]

Answer:

(4,0)

Step-by-step explanation:

The object is first at (0,0)

It is reflected across line x=-2, this means you draw the mirror line at x=-2 and count 2 equal units backwards to get the image.The image will be at ;y=0\\\\x=-2-2=-4\\\\\\=(-4,0)

The image (-4,0) is then reflected on the y-axis

You know reflection on the y-axis, the y-coordinate remains the same but the x-coordinate is changed to its opposite sign.

Hence;

(- -4,0)= (4,0)

The image will move 8 units towards positive x-axis.This is the same as moving 4 units from the mirror line at (0,0) and land at (4,0)

6 0
3 years ago
ethan took a quiz with 15 questions. if he answered 3/5 of the questions correctly, how many did he get wrong?
valentina_108 [34]
\frac{15}{1} *  \frac{3}{5} =  \frac{45}{5} = 9 &#10; &#10;&#10;&#10;&#10;

15-9= 6
Ethan got six questions wrong. 
3 0
2 years ago
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