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Answered 2011-01-08 20:03:57

25

Add the items together

10 + 20 + 30 + 40 = 100

Divide the total by the number of items

100 ÷ 4 = 25

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Anonymous
Answered 2020-08-09 07:31:22

Four

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30 + 40 + 10 + 40 = 120120/4 = 30Average = 30



|-20 - (-40)| = 20 |-20 - 10| = 30 -20 is closer to -40 than 10.



the average is 20 dollars they can range from 10 dollars to 30 or 40 dollars


5w - 20 -40 ...... -105w - 30 -40 ...... -105w - 40 -40 ...... +205w - 50 -40 ...... +10/+2010w - 30 -30/-20 ...... +4010w - 40 -30 ...... +5010w - 50 -30 ...... +5015w - 40 -22/-15 ...... +5015w - 50 -22 ...... +5020w - 40 -10 ...... +5020w - 50 -10 ...... +50



Greatest common factor of 20 30 and 40 is 10.


Take your pick; 10 and 20, 10 and 30, 10 and 40, 10 and 50, 10 and 60, 10 and 70, 10 and 80, 10 and 90, 20 and 30, 20 and 50, 20 and 70, 20 and 90, 30 and 40, 30 and 50, 30 and 70, 30 and 80, 40 and 50, 40 and 70, 40 and 90, 50 and 60, 50 and 70, 50 and 80 50 and 90, 60 and 70, 70 and 80, 70 and 90, 80 and 90.


Their factors are: 20: 1, 2, 4, 5, 10, 20 30: 1, 2, 3, 5, 6, 10, 15, 30 40: 1, 2, 4, 5, 8, 10, 20, 40


10 and any multiple of 10 (20, 30, 40, etc) 20 and 30, 40 and 90, 60 and 70


10, 20, 30, 40, 50, 60, and so on 10, 20, 30, 40, 50 The first ten multiples of ten are 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100. 10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190.........................……and keep on adding 10.


They are 10, 20, 30, 40, 70, 90 and 896123450


30 x 70 = 210020 x 40 = 8002100 / 50 ( because there are 30 males and 20 females ) = 58


10 - 2n = 30 10 - 2n + 10 = 30 + 10 2n = 40 2n/2 = 40/2 n = 20


Multiples of 20: 1, 2, 4, 5, 10, 20 M of 30: 1, 2, 3, 5, 6, 10, 15, 30 M of 40: 1, 2 ,4, 5, 8, 10, 20, 40 Common factors: 1, 2, 5, and 10


The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. The common factors of 30 and 40 are 1, 2, 5, and 10, and the GCF is 10.


When it is a multiple of 10, such as 20, 30, 40, etc.



for 30 they are: 1, 2, 3, 5, 6, 10, 15, & 30 For 40 they are: 1, 2, 4, 5, 8, 10, 20, & 40


0-10 4 10-20 6 20-30 x 30-40 y 40-50 Z 50-60 6 60-70 4 total 200 median=33.5 mode=34


30 40 20 30 10 ( not in order)


It's increasing by...10 + 10 =2020 + 20 =4040 + 30 = 7070 + 40 = 110110 + 50 = ....Each number increases by 10 more than the previous.Hope that makes sense.


10 plus 20 plus 30plus 40 plus 50 equals 150 because 50 plus 40 equals 90 plus 30 =120+20= 140 then + 10 = 150


30 and -40 20 and -30 10 and -20 5 and -15 2 and -12 -5 and -5



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