Using their concepts concept, we have that:
a) The mean of the data-set is of 81.6.
b) The median of the data-set is of 80.
<h3>What is the mean?</h3>
The mean of a data-set is given by the <u>sum of all observations in the data-set divided by the number of observations</u>.
In this problem, there are 2 + 8 + 6 + 3 + 9 = 28 observations, hence the mean is:
M = (70 x 2 + 75 x 8 + 80 x 6 + 85 x 3 + 90 x 9)/28 = 81.6.
<h3>What is the median?</h3>
The median of a data-set is the 50th percentile, the value that separates the median in two halfs.
This data-set has an even number of elements, hence the median is the mean of the 14th and 15th elements, as 28/2 = 14. Both elements are 80, hence the median is of 80.
More can be learned about the mean and the median of a data-set brainly.com/question/13202035
#SPJ1
<span><span>f<span>−1</span></span><span>(x)</span></span>=<span>√<span>100<span>−x</span></span></span>,<span>−<span>√<span>100<span>−<span>x</span></span></span></span></span>
Answer:
19
Step-by-step explanation:
He can make 2 pies with one cup of sugar so he can make 40 pies with 20 cups of sugar. He already used a cup of sugar so the total is 19 (20-1)
3,000,000 + 20,000 + 9,000 + 200 + 50 + 1
