Evaluate the discriminant for the equation. Then use it to predict the number of distinct solutions, and whether they are rational, irrational, or nonreal complex.w2 + 4w + 5 = 0
A. One rational solution (a double solution)
B. Two distinct nonreal complex solutions
C. Two distinct rational solutions
D. Two distinct irrational solutions
Answer: B
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Convert the angle to radians. Leave as a multiple of ?.216°
A. 
B. 
C. 
D. 
Decide whether the equation is or is not an identity.tan (? + ?) = tan ?
A. Not an identity B. Identity
A hemisphere-shaped dome of radius 40 ft is to be coated with a layer of rust-proofer before painting. Use differentials to estimate the amount of rust-proofer needed if the coat is to be 0.04 in. thick.
?
Round the result to the nearest hundredth, if necessary.
?
Hint: The volume of a hemisphere of radius r is 
.
?
__________ ft3
Fill in the blank(s) with the appropriate word(s).
Solve the proportion.
?
?
A. ?
B. 
C. ?
D. ?
E. no solution