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morpeh [17]
2 years ago
6

A student received an 82% on an exam. If there were 50 questions on the exam, which ratio would show the number of questions ans

wered correctly to the total number of questions? A. 25:50 B. 59:50 C. 82:50 D. 41:50
Mathematics
2 answers:
solmaris [256]2 years ago
8 0
Hello!

To solve this we have to find what 82% of 50 is

So we do 50 * 0.82 where 0.82 is 82% as a decimal.

This gives us 41

So the answer is D

Hope this helps!
Oksana_A [137]2 years ago
8 0
Total questions = 50
Correct Answer = 82% x 50 = 0.82 x 50 = 41

Ratio of questions answered correctly to total number of questions:
41 : 50 

--------------------------------------------
Answer: 41 : 50 (Answer D)
--------------------------------------------
You might be interested in
Add. 4.29 + 97.2 + 0.687 =<br> 102.177<br> 140.787<br> 1,407.87<br> 1,021.77
nordsb [41]
4.29 + 97.2 + 0.687 = 102.177

In adding decimal numbers, make sure that the decimal points are aligned. Since each number has different counts of numbers after the decimal point, use 0 to pad the missing places.
    
      4.290
    97.200
   <u>   0.687
</u>  102.177

The count of numbers after the decimal point is the same count of number of the decimal who has the greatest count of number after the decimal point.

4.29 only has 2 counts of places after the decimal point
97.2 only has 1 count of place after the decimal point
0.687 has 3 counts of places after the decimal point. 

The sum of the decimals must also have 3 counts of places after the decimal point.

7 0
3 years ago
A national survey interviewed 3800 people ages 18 and older nationwide by telephone. One question asked was the amount of gasoli
NeTakaya

Answer:

For this case a parameter represent the population data and for this case the parameter would be the true mean \mu who represent the amount of gasoline they used in the previous week

\bar X= \frac{\sum_{i=1}^n X_i}{3800} =11.75

And the sample mean is an unbiased estimator of the true mean.

Step-by-step explanation:

For this case a parameter represent the population data and for this case the parameter would be the true mean \mu who represent the amount of gasoline they used in the previous week

And in order to estimate the parameter of interest we use a survey of n =3800 and the sample mean who represent an statistic is given by:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And we got:

\bar X= \frac{\sum_{i=1}^n X_i}{3800} =11.75

And the sample mean is an unbiased estimator of the true mean.

4 0
3 years ago
Part of your job as manager is to count the cash for the daily bank deposit. When you count the cash, you have 47 ones, 22 fives
cluponka [151]

Answer:

$592.92

Step-by-step explanation:

Bills:

47 ones = 47*1 = $47

22 fives = 22*5 = $110

9 tens = 9*10 = $90

17 twenties = 17*20 = $340

Total Bills: 47+110+90+340 = $587

Coins:

67 pennies = 67*1 = $0.67

12 nickels = 12*5 = $0.60

9 dimes = 9*10 = $0.90

15 quaters = 15*25 = $3.75

Total Coins: 0.67+0.6+0.9+3.75 = $5.92

Total: $587+$5.92 = $592.92

3 0
1 year ago
Given:
Mamont248 [21]

Option a. 11 is the right answer

Step-by-step explanation:

To find the value of a function on particular input, the value is put in the function in place of variable

Given function is:

f(x) = \left \{ {{3x-7\ \ \ x>0} \atop {2x+3\ \ \  x

As we have to find f(6) and x>0 the part of function 3x-7 will be used

so,

f(6) = 3(6)-7\\= 18-7\\=11

Hence,

Option a. 11 is the right answer

Keywords: Functions, Variables

Learn more about functions at:

  • brainly.com/question/4021035
  • brainly.com/question/4034547

#LearnwithBrainly

8 0
3 years ago
What answer choice is it?
Alinara [238K]

Answer:

I am pretty sure it is A

Step-by-step explanation:

7 0
2 years ago
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