If the weights of five chicks in kilograms are 2.5, 2.0, 4.2, 3.0, and 9.3, then the mean weight of the chicks are A. 3.5kg B. 4.2kg C. 4.0kg D. 3.0kg

B

Step-by-step explanation:

The mean is calculated as

mean =

          =

          = = 4.2 Kg → B

4.2 kg

Step-by-step explanation: the mean formula is the total of the values divided by the number of values which equals: 2.5 + 2.0 + 4.2 + 3.0 + 9.3 = 21 ÷ 5 ( the number of chicks) = 4.2kg.

4 & 3

step-by-step explanation:

factor of 108=2×2×3×3×3=2×2×3^3=the number is 4 because 2 only occurs 2 times and 2×2=4 and factor of 2187=3^3×3^3×3=the number is 3 because 3 onlyvoccur 1 time.