B. The data is skewed to the left.
Given that Terry and Ed started a lawn mowing business and purchased the <span>the mowers and equipment for $1,300 which charged $15 for each lawn and use $2 worth of gas, the number of lawns that Terry and Ed must mow in order to break even would be 100 lawns. The answer would be option C. Hope this answer helps.</span>
A researcher analyzed the results of her data and calculated the standard deviation of scores at 3.5. what is the variance?
Solution: We are given the standard deviation of scores = 3.5
We know that the variance is the square of the standard deviation.
Therefore, the variance is:
Therefore, the variance of the scores is 12.25
Answer:
12 years
Step-by-step explanation:
Represent the mother's age by m and the son's by 4. Currently m = 36 years old.
In x years the mother will be three times as old as her son:
mother: 36 + x years old
son: 4 + x years old
The pertinent equation to solve is:
36 + x = 3(4 + x)
Performing the multiplication, we get:
36 + x = 12 + 3x, or
24 = 2x. Then x = 12.
Check: In 12 years, will the mother's age be 3 times the son's age?
Does 36 + 12 = 3(4 + 12)?
Does 48 = 48? YES
The mother will be 3 times as old as her son in 12 years from now.
Answer:
200 = c
Step-by-step explanation:
100/45=2.2.
2.2x90= 200.
