Each student should make at least $25 to reach their goal.
Mean)
In general, the formula is
Thus, in our case,
Thus, the mean is 5.1
Variance)
In general, the formula is
Where x_i is each of the elements in the data set, X is the mean, and N is the number of elements in the data set.
Therefore, in our case,
The variance is 0.254
Standard deviation)
If S^2 is the variance; then,
Hence, in our case,
The standard deviation is 0.504
Answer:
5 is 35 and 6 is 50
Step-by-step explanation:
To solve 5, you need to know how many degrees is the line, which is 180 because lines are 180 degrees. You then subtract 110 from 180 which equals to 70. What you have left now is 2k. A number times 2 will equal to 70, so k=35.
For 6, if you ever see two lines intersecting each other, it means that it is 360 degrees. We already have one angle, which is 120. The other angle is d+70 degrees, and any angle that is reflecting the other angle will have the same value. So, d equals 50
(sorry if you still can't understand it I'm not good at English
Answer:
250 lifeguards
(P.S, i dunno if i got it right or not should be correct tho)
Step-by-step explanation:
15 km divide 0.06 for every life guard. therefore, there are 250 lifeguards