If vx=11u and vz=u+30 find the value of u that makes the Quadrilateral WXYZ a parallelogram
1 answer:
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Answer: 271.
Step-by-step explanation:
When the prior population proportion of success is not available, then the formula to find the sample size is given by :-
Given : Significance level :
By using the standard normal distribution table ,
Critical value :
Margin of error :
Then , the required minimum sample size will be :-
Hence, the required minimum sample size is 271.
Answer:
a) About 40° and 5 °; b) the height of the person; c) none
Step-by-step explanation:
(a) Angles of depression and elevation
The angle of depression is about 40°.
The angle of elevation is about 5°.
(b) Dependence of angles
The angles of elevation and depression depend on the height of the person.
The taller the person, the smaller the angle of elevation and the larger the angle of depression.
(c) Limitations of angles
There is no chance that either angle could be greater than or equal to 99°.
Each is part of a right triangle.
If one angle is a right angle, each of the other two angles must be less than 90°.
