1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
julia-pushkina [17]
2 years ago
8

HeLP ASAP WiLl GiVe bRanIiEst!!!!!

Mathematics
2 answers:
riadik2000 [5.3K]2 years ago
6 0

<u>x = 9</u>

Step-by-step explanation:

mean = 5+7+7+x /4 = 7

19+x / 4 = 7

19+x = 28

x = 9

olchik [2.2K]2 years ago
4 0

Answer:

For question 1 the answer is 6.

For question 2 the answer is 9

Question 1

In order to find the average of a set of numbers you have to add all the numbers given and then divide the value that you get by the amount of numbers added. In the question you were given 7 numbers therefore, you add all of then and then divide the value you get by 7.

Question 2

To calculate the mean we do as we did above and add all the numbers given then divide the value obtained by the amount of numbers added. However in this question we are missing a number so we substitute the value and call it *x*. So, (5+7+7+x)/ 4 = 7. we cross multiply to get 4x7 which is 28. The new equation would then be: (5+7+7+x) =28, you then group the like terms to get: 5+7+7-28 = x. Therefore x is equal to 9. Meaning that the forth number is *9*

You might be interested in
The average age of 4 children is 15 yrs . if the ages of their parents are added , their average age is 25 .find the age of thei
WITCHER [35]

The age of the father is 57 years old

<h3>Calculating mean of a population</h3>

Total age = Average age x Population

Average of the four children = 15

Population = 4

Total age of the four children = 15 x 4

Total age of the four children = 60 years

If the parents are added:

Population = 6

Average age = 25

Total age = 25 x 6

Total age = 150 years

Total age of the parents = 150 - 60

Total age of the parents = 110 years

The father is 4 years older than his wife

Let the age of the father be x

The age of the wife = x - 4

x + x - 4 = 110

2x = 114

x = 114/2

x = 57

Therefore, the age of the father is 57 years old

Learn more on The mean of numbers here: brainly.com/question/20118982

#SPJ1

6 0
1 year ago
My brain small so could you plz anwser his 6/11+ 2/ 3
Lena [83]

Answer:

1 7/33

Step-by-step explanation:

6/11 + 2/3 --> We need a common denominator

--> 11 x 3 = 33

33 is our common denominator

6 x 3 = 18

2 x 11 = 22

18/33 + 22/33 = 40/33

Convert to a mixed number

=> 1 7/33

Thus, we have our answer.

4 0
3 years ago
Please helpppppppp<br><br> If you don’t know it don’t answer please
vladimir2022 [97]

Answer:

x=36

y=72

Step-by-step explanation:

I didnt do this type of problem in a while but Im pretty sure its correct

6 0
2 years ago
Just number 14. Nothing other unless u want to
Shkiper50 [21]

Answer: 4 parfaits.

Step-by-step explanation: 1/2 divided by 1/8. when you divide you flip the second fraction and multiply it so now it's 1/2 x 8/1 which is 8/2 and then is turned into 4 so 4 parfaits

Hope this helps im really good at fractions if you need anything else lol :')

6 0
3 years ago
Abdi has two electric train sets: A and B. Each train is on its own circular track. He starts both trains at the same time. Trai
mrs_skeptik [129]

Answer: 36 seconds

Step-by-step explanation:

A: 9, 18, 27, 36

B: 12, 24, 36

3 0
3 years ago
Read 2 more answers
Other questions:
  • How to solve a complex number
    10·1 answer
  • Let g(x)=-5x+2. Evaluate g(-2)
    8·2 answers
  • if your gross pay was $365 and your net pay was $313.90 what percent of your pay went towards deductions
    13·1 answer
  • Help Me PLEASE!!!!!!!
    12·1 answer
  • Okay i have 16\16 and 21\21 it has to be division and have the same answer
    14·1 answer
  • Use words to describe the relationship between corresponding numbers of hours and weeks
    7·2 answers
  • In a class of students, the following data table summarizes how many students have a cat or a dog. What is the probability that
    9·1 answer
  • How do you expand polynomials?
    8·1 answer
  • PLS HELPjakaiajajajakakakaaka
    7·2 answers
  • Pls help its due today
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!