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pishuonlain [190]
3 years ago
8

Find the missing number to make the average correct. The average of 11, 17, 18, and ? is 17.

Mathematics
1 answer:
mart [117]3 years ago
6 0

Answer:

The missing number is:

22

Step-by-step explanation:

There are 3 numbers and one more

4 numbers and your average is 17

then:

17*4 = 68

then:

11 + 17 + 18 + a = 68

46 + a = 68

a = 68 - 46

a = 22

Check:

(22 + 11 + 17 + 18)/4 = 17

68/4 = 17

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5 pts
ruslelena [56]

Answer:

{8, 24, 72, 216, 648}

Step-by-step explanation:

Geometric sequence:

In a geometric sequence, the quotient of consecutive terms is always the same, that is, each term is the previous term multiplied by the common ratio.

In this question:

First element is 8, common ratio of 3. So

Second term: 8*3 = 24

Third term: 24*3 = 72

Fourth term: 72*3 = 216

Fifth term: 216*3 = 648

So the answer is {8, 24, 72, 216, 648}

4 0
3 years ago
10(x - 5) = -80 i don't understand math that well lol
Alex_Xolod [135]
10(x-5)=-80
10x-50=-80
    +50   +50
10x=-30
/10   /10 

x=-3
8 0
3 years ago
Read 2 more answers
1000000000000x1690000000000000000000000000000000000000000000000000000066666666e5555555555555555555555555555555555555555555555555
FromTheMoon [43]

Answer:

oh god my calculator can't handle this

Step-by-step explanation:

so your answer is 3, take it or leave it

5 0
3 years ago
Read 2 more answers
A researcher wants to survey people from different age groups to analyze voting patterns. Which type of survey will best accompl
nordsb [41]

Answer: Stratified sampling


Step-by-step explanation:

Stratified sampling is a random sampling method in which the population is divided into non-coinciding groups are called strata and a sample is picked out by some design within each stratum.

Given: A researcher wants to survey people from different age groups to analyze voting patterns.

Thus he will make different groups according to different ages to analyze voting patterns that are called stratum.

Thus, Stratified sampling best accomplish this goal.


6 0
3 years ago
Read 2 more answers
Find the product 20*9*15 tell which property you used
alukav5142 [94]
Okay so first what you would have to do is to read the question carefully and understand it because if you don't read the question, well the thing is you could get it wrong. and so first see what the question is and then understand it and once you'd understand it, solve it. So what you would have to do is tell the property is using and think about how the question is written and think of the properties you have studied. Well you might as well notice that its the associative property because if you don't have parenthesis around your problem, it wouldn't be as organized as it should be because if you don't follow the Associative Property, it could confuse you. And so the answer to this problem would be a more good or sensible answer because you used the properties to help you and so your final answer to this problem would be 2,700 as your final answer and keep in mind that if you use properties it would be a much easier problem to solve. And so thank for your question and have a blessed day and May God bless you and I hope this helped you out with your question you asked and so thank you again and so see you again. Bye !!!
7 0
3 years ago
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