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Ann [662]
3 years ago
6

If the mean (average) of five consecutive numbers is 21, the smallest of three five numbers will be...

Mathematics
1 answer:
Vitek1552 [10]3 years ago
7 0
Consecutive numbers are 1 apart
they are
x,x+1,x+2,x+3,x+4

average is 21
(x+x+1+x+2+x+3+x+4)/5=21
(5x+10)/5=21
times both sides by 5
5x+10=105
minus 10 both sides
5x=95
divide both sides by 5
x=19
x+1=20
x+2=21
x+3=22
x+4=23


the smallest number is 19
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pogonyaev

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in a small machine shop, eight 5-gallon drums of oil are on hand. if 2 gallons are used each day and the owner wants a 30-day su
zavuch27 [327]
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4 0
3 years ago
Sorry forgot to add this to my last post " hee -hee-hee"!
My name is Ann [436]
For number 3, it is reciprocal 
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3 0
3 years ago
Read 2 more answers
25x5+15x3-40x2 anyone?
Kipish [7]

25 * 5 + 15 * 3 - 40 * 2 =

125 + 45 - 80 =

170 - 80 =

90



5 0
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