Answer:
19 is the third number.
Step-by-step explanation: To find the mean you need to add all of the numbers up then divide it by how many numbers there are. Since the mean is 10 and there are 3 numbers, I know that the numbers have to sum up to 30, and since 7+4=11 then I know to make the sum 30 I need 19 more. So the third number in your data set is 19.
Answer:
p = 4x
Step-by-step explanation:
The perimeter p of a square is 4 times the length of a side x
p = 4x
Answer: last week he made $630
Step-by-step explanation:
14% of 4500 is 630
Answer:
x=8
Step-by-step explanation:
distribute 7(4+x)
28+7x=84
84-28=56
56/7=8
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