Answer:
Mean is 3.2
Median is 3.1
Step-by-step explanation:
a) mean
= (2.5+3.6+3.1+4.3+2.9+2.3+2.6+4.1+3.4)/9
= 28.8/9
= 3.2
b) median: we will arrange in ascending order and pick the middle term.
2.3 2.5 2.6 2.9 3.1 3.4 3.6 4.1 4.3
From the above order, 3.1 is the middle term and is the median
Answer:
0.91 DVDs
Step-by-step explanation:
The expected number of DVDs is the sum of products of the number of DVDs and their probability:
E(n) = 0·0.42 + 1·0.36 + 2·0.14 + 3·0.05 + 4·0.03
= 0 + 0.36 + 0.28 + 0.15 + 0.12
= 0.91
A given customer can be expected to buy 0.91 DVDs.
X^2 + 16x + 61 = 0
x^2 + 16x = -61
x^2 + 16x + 64 = -61 + 64
(x + 8)^2 = 3
x + 8 = (+-) sqrt 3
x = -8 (+-) sqrt 3
x = -8 + sqrt 3...and x = -8 - sqrt 3 <== ur solutions
Answer:
E
Step-by-step explanation:
A Slope of 5/2 means you have to go up 5 and over 2 every time a point is on the line.
Answer:
18 and 5
Step-by-step explanation:
if 'x' - is the length and 'y' - the width of the rectangle, then
2(x+y)=46 - perimeter of the original rectangle and 2(2x+(y+5))=66 - the perimeter of the new rectangle.
Finally, the length is x=5 and the width is y=18.
