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Viefleur [7K]
3 years ago
5

Joe found the AVERAGE age of his seven cousins. He listed their ages in order 4, 7, 10, 10, 12, 18, 20. He added them up to get

81. He divided 81 by 7 (the number of cousins) - and got an average of 11 r 4 The AVERAGE is also the same as the .....
Mathematics
1 answer:
valina [46]3 years ago
4 0

Answer:

The average is the same as the Mean

Step-by-step explanation:

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Step-by-step explanation (Question 1):        

<u>Step 1: (Question 1): Subtract x from both sides.</u>

5x+3=x+13

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<u>Step 2: (Question 1): Subtract 3 from both sides.</u>

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<u>Step 3: (Question 1): Divide both sides by 4.</u>

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Step-by-step explanation (Question 2):      

<u>Step 1: (Question 2): Multiply by LCM</u>

15x^2 - 6 = x

<u>Step 2: (Question 2): Solve 15x^2</u>

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<u>Step 3: (Question 2): Solve</u>

ANSWER: x=0.666667 or x=−0.6

See Attachment 1 for question 1 steps (FULL)

See Attachment 2 for question 2 steps (FULL)

Answer:    

1)   x = 5/2

2)  x=0.666667 or x=−0.6

 

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