? is an acute angle and sin ? is given. Use the Pythagorean identity sin2 ? + cos2 ? = 1 to find cos ?.sin ? = 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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At what points is the given function continuous?f(x, y, z) = yz cos 
A. All (x, y, z) such that x ? 0
B. All (x, y, z) such that x ? 
C. All (x, y, z) such that 0 ? 
? 2?
D. All (x, y, z)
Mathematics
Find the quotient.-80 ÷ (-4)
A. 20
B. -20
C. 
D. 10
Mathematics
Provide an appropriate response.When asked to describe logarithms in one simple sentence, the teacher said, "Logarithms are exponents". What is meant by this sentence?
What will be an ideal response?
Mathematics
For the proportion, find the unknown number n.
= 
A. 
B. 42
C. 
D. 
Mathematics