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igtguith
24.01.2020 •
Mathematics
Male and female high school students reported how many hours they worked each week in summer jobs. the data is represented in the following box plots: (see picture attached).
identify any values of data that might affect the statistical measures of spread and center. choose the best choice below:
a. the females worked more than the males, and the female q3 equals the top of the range.
b. the spread and center are skewed due to the fourth quartile missing with the females.
c. there is a significant outlier at the low end for the females.
d. the males have a high outlier, and the females have a low outlier.
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Ответ:
Angle Y equals 58.9 degrees (to the nearest tenth)
Step-by-step explanation: The triangle given in the question already has all three sides provided, while none of the angles has been given. We can apply the cosine rule which states that,
c^2 = a^2 + b^2 - 2ab CosC
Where C is the reference angle, we shall replace this with a new label, Y to suit our question. Hence our Cosine Rule can be re-written as ;
y^2 = x^2 + z^2 -2xz CosY
20^2 = 22^2 + 18^2 -(2{22 x 18}CosY)
400 = 484 + 324 - (2{396} CosY)
400 = 808 - (792 CosY)
Subtract 808 from both sides of the equation
-408 = -792CosY
Divide both sides of the equation by -792
-408/-792 = CosY
0.5151 = CosY
By use of calculator or table of values, 0.5151 equals 58.9958
Approximately to the nearest tenth,
Y = 58.9 degrees