Brainiest and 20 please give step by step answer :)

Mathematics

1 answer:

34kurt2 years ago

3 0

Answer:

172.7 ft²

Step-by-step explanation:

Fencepost = Cylinder
Cylinder surface area : A = 2πrh + 2πr²
Cylinder surface area : A = 2 (3.14 × 0.5ft × 5ft) + 2 (3.14 × 0.5²ft) =
15.7 + 1.57 = 17.27 ft²

17.27 ft² × 10 = 172.7 ft²

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Here are two datasets:

fiasKO [112]

Answer:

Option a) Mean

Mean is affected a lot by the change in the last observation as the median remains the same.

Step-by-step explanation:

we are given the following in the question:

Data set A: 64, 65, 66, 68, 70, 71, 72

Data set B: 64, 65, 66, 68, 70, 71, 720

For data set A, the mean and median are 68.

For data set B:

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1124}{7} = 160.57$

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$