Use the Pythagorean theorem to find the length of the third side of the right triangle. Leave any irrational answers in radical form.
A. 7
B. 9
C. 5
D. 10
Answer: D
Mathematics
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Solve for the angle ?, where 0 ? ? ? 2?sin 2? - cos ? = 0
A. 0, 
, ?, 
, 2?
B. ? = 
, 
, 
, 
C. ? = 
, 
, 
, 
D. 
, 
, 
, 
Mathematics
Find the standard deviation s for the given data. Round your answer to one more decimal place than the original data.The test scores of 40 students are summarized in the frequency distribution below. Find the standard deviation. 
A. 15 B. 14.3 C. 13.5 D. 15.8
Mathematics
Provide an appropriate response.A perfect 
is a number or expression that can be written as a square of an expression.
A. cube B. square root C. cube root D. square
Mathematics
Determine the sum of the following infinite series: 
(2)k + 1.Enter just an integer.
Fill in the blank(s) with the appropriate word(s).
Mathematics