Find the product. Assume that all variables represent nonnegative real numbers.(
+ 
)(
+ 8
)
A. m + 8n
B. 
+ 9
+ 8
C. m + 9
+ 8n
D. m2 + 9mn + 8n2
Answer: C
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Use the 68-95-99.7 rule to solve the problem.For women at Hartford College, times to run 400 meters are normally distributed with a mean of 85 seconds and a standard deviation of 7 seconds. What percentage of the times are more than 71 seconds?
A. 2.5% B. 95% C. 5% D. 97.5%
Round to the nearest thousandth.0.622312
A. 0.6223 B. 0.63 C. 0.62 D. 0.622
Verify the identity.tan 2x = 
What will be an ideal response?
Each ounce of substance A supplies 4% of the nutrition a patient needs. Substance B supplies 29% of the required nutrition per ounce, and substance C supplies 14% of the required nutrition per ounce. If digestive restrictions require that substances A and C be given in equal amounts, and the amount of substance B be one-fifth of either of these other amounts, find the number of ounces of each substance that should be in the meal to provide 100% of the required nutrition. ?
A. The solution is 0.84 ounce of substance A, 4.20 ounces of substance B, and 0.84 ounce of substance C. B. The solution is 4.20 ounces of substance A, 0.84 ounce of substance B, and 4.20 ounces of substance C. C. The solution is 21.01 ounces of substance A, 4.20 ounces of substance B, and 21.01 ounces of substance C. D. The solution is 4.20 ounces of substance A, 21.01 ounces of substance B, and 4.20 ounces of substance C. E. The solution is 21.01 ounces of substance A, 0.84 ounce of substance B, and 21.01 ounces of substance C.