Agroup of three numbers has an average of 70 in the first two are 12 and 19 what is the third number

The third number is 179 .

Step-by-step explanation:

Given as :

The average of group of three numbers = n = 70

The first number = x = 12

The second number = y = 19

Let The third number = z

Now, According to question

∵ The average of group of three numbers = n

I.e n =

or. = 70

Or, x + y + z =70 × 3

Or, x + y + z = 210

Or, 12 + 19 +  z = 210

Or, 31 +  z = 210

or, z = 210 - 31

∴ z = 179

So, The third number = z = 179

Hence , The third number is 179 . Answer

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation:

answer: 12   they all have at least 28 days

step-by-step explanation: haha