Just subtract the year we’re in now. 2021-30=1991
2021-40=1981
Mr. A- 1991
Mr. B- 1981
It is a function because in a function the x's do not repeat. So since there are no two numbers in the x column that are the same, yes it is a function.
Answer: The mean of the data set is 25.
Step-by-step explanation:
To calculate the mean of a data set, first add up all the values.
17 + 34 + 19 + 27 + 30 + 23 = 150
Then divide the sum by the amount of values in the data set. Our sum here is 150 and the amount of data values is 6.
150 ÷ 6 = 25
Answer:
Step-by-step explanation:
<u>Surface area comprises of:</u>
- A = Area of square base + 4(area of triangle faces)
- A = 2.5² + 4*1/2*2.5*5= 31.25 cm²
Correct option is C
