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Neporo4naja [7]
3 years ago
10

The following table gives the mean scores for 4 different classes

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
7 0
The answer is to that question is Class A
aksik [14]3 years ago
5 0

Answer:

a

Step-by-step explanation:

a

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Travis is cutting strips of paper for a project. He needs strips that are 114 inches wide. He cut his first strip too wide. His
choli [55]

Travis cuts 125 whole 2/5 inches wide strip if the percent of error was 10% the actual length of the strips he needs to cut was 114 inches

<h3>What is the percentage?</h3>

It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.

We have:

The length Travis needs to cut = 114 inches

Percent of error = 10%

Let's assume he cuts x inches wide strip

So from the percent of error formula:

\rm \dfrac{x-114}{114} = \dfrac{10}{100}

\rm x = \dfrac{114}{10}+114

\rm x = \dfrac{1254}{10}\Rightarrow \dfrac {627}{5}  or

\rm x = 125\dfrac{2}{5} \ inches  

Thus, Travis cuts 125 whole 2/5 inches wide strip if the percent of error was 10% the actual length of the strips he needs to cut was 114 inches

Learn more about the percentage here:

brainly.com/question/8011401

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3 0
3 years ago
Which of the following is the sum of the numbers if the mean of five number is 6
astra-53 [7]

Answer:

Step-by-step explanation:

you have to do 5+1 and then you will get 6

4 0
3 years ago
If X=3+√8, find X square + 1/x square<br>​
irina1246 [14]

Given :-

  • x = 3 + √8

To find :-

  • x² + 1/x²

Solution :-

<u>According</u><u> to</u><u> Question</u><u>,</u>

  • x = 3 + √8
  • 1/x = 1/3-√8
  • 1/x = 1(3+√8)/(3+√8)(3-√8)
  • 1/x = 3+√8/3²-(√8)²
  • 1/x = 3+√8/9-8
  • 1/x = 3 + √8

<u>So </u><u> </u><u>that</u><u> </u><u>,</u>

  • x² + 1/x²
  • (x + 1/x)² - 2
  • ( 3+√8+3-√8)²-2
  • 9² - 2
  • 81 - 2
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5 0
3 years ago
PLSSS HELP ASAP and don’t send links I really need help this is hard ash
dolphi86 [110]

Answer:

b =  \sqrt{ \frac{ {c}^{2} }{2 {\pi}^{2} }  -  {a}^{2} }

3 0
3 years ago
Which of the following square roots is a rational number?
Zielflug [23.3K]

Answer and Step-by-step explanation:

None of the square roots shown, 75, 12, 18 are rational.

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