Add the integers.-89 + (-30)
A. 119
B. -119
C. -120
D. 120
Answer: B
Mathematics
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Divide.
÷ 
A. 
B. 
C. y - 11
D. 
Mathematics
Multiply.(3r + 9s)(3r - 9s)
A. 9r2 + 54rs - 81s2 B. 9r2 - 54rs - 81s2 C. 9r2 - 81s2 D. 3r2 - 54rs - 81s2
Mathematics
In your own words, define 
for any nonzero number d.
What will be an ideal response?
Mathematics
Use identities to write the expression as a single function of x or ?.cos 
A. -sin ? B. cos ? C. sin ? D. -cos ?
Mathematics