Answer:
59 degrees
Step-by-step explanation:
In the figure below, XZ is a diameter of circle A.
Since the Angles (5w+4) and (11w) forms a straight line, then:
![(5w+4)^\circ+(11w)^\circ=180^\circ\\5w+11w+4=180\\16w=180-4\\16w=176\\w=\frac{176}{16}\\ w=11](https://tex.z-dn.net/?f=%285w%2B4%29%5E%5Ccirc%2B%2811w%29%5E%5Ccirc%3D180%5E%5Ccirc%5C%5C5w%2B11w%2B4%3D180%5C%5C16w%3D180-4%5C%5C16w%3D176%5C%5Cw%3D%5Cfrac%7B176%7D%7B16%7D%5C%5C%20w%3D11)
Therefore, the arc measure of YZ will be:
![5w+4=5*11+4=59^\circ](https://tex.z-dn.net/?f=5w%2B4%3D5%2A11%2B4%3D59%5E%5Ccirc)
Answer:
Step-by-step explanation:
i think the answer is D
Answer:
4,480
Step-by-step explanation:
Well it asks what's the perimeter of the ACTUAL region. So it should be 22.4 times 200. (If I read it right)
Answer:
Kindly check explanation
Step-by-step explanation:
Given that :
Mean (m) = 72
Standard deviation (sd) = 10
Grading cutoff policy:
bottom 5% receive F
next 15% receive D
next 35% receive C
next 30% receive B
A) Give the cutoffs for the grades in this course in terms of standardized scores.
Standardized score for grade cutoff:
Locating the Zscore for the proportions on the z table :
Bottom 5% = 0.05 ; corresponding Zscore = - 1.645
next 15% receive D = (5 +15)% 0.20 ; corresponding Zscore = - 0.84
next 35% receive C = (20+35)% = 0.55 ; corresponding Zscore = 0.13
next 30% receive B = (55 + 30)% = 0.85 ; Corresponding Zscore = 1.04
B) Give the cutoffs in terms of actual total scores.
Recall:
Zscore = (x - m) /sd ; where x = actual score
x = sd*z + m
For F:
10*(-1.645) + 72 = 55.55
For D:
10*(-0.84) + 72 = 63.6
For C:
10*(0.13) + 72 = 73.3
For B:
10*(1.04) + 72 = 82.4
C) Do you think that this method of assigning grades is a good one?
Yes, it is good in terms of expressing scores around the mean such that score below are negative and those above are positive. However, it is a little bit ambiguous.
C is the answer because 2.7 minus .9 is 1.6