Solve by factoring and using the principle of zero products.21n2 + 42n = 0
A. - 2, 42
B. - 2, 0
C. - 2
D. 0
Answer: B
Mathematics
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Perform the operation indicated. Simplify.
+ 
- 
A. 
B. 
C. 
D. 
Mathematics
Determine if the given integer value for the variable is a solution to the equation.5k + 6 = 2k + 30; 8
A. Yes B. No
Mathematics
Find the unit rate.Janet types a 1620-word paper in 45 minutes. What is her unit rate in words per minute?
A. 1215 words/min B. 27 words/min C. 36 words/min D. 48 words/min
Mathematics
In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.a = 1 ft, c = 30 ft
A. b ? 31 ft B. b ? 30.0 ft C. b = 29 ft D. b ? 5.4 ft
Mathematics