Suppose we draw a card from a well-shuffled deck of 52 cards. Find the specified probability.The probability of drawing a spade
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Factor completely. If the polynomial cannot be factored, say it is prime.10x3 - 19x2 - 15x
A. x(2x - 5)(5x + 3) B. (2x2 - 5)(5x + 3) C. x2(2x - 5)(5x + 3) D. x(5x - 5)(2x + 3)
Mathematics
Solve the problem.The formula D = 6e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. When the number of milligrams reaches 3, the drug is to be given again. What is the time between injections?
A. 27.47 hr B. 20.22 hr C. 17.33 hr D. 44.79 hr
Mathematics
Find the product and write the result in standard form.(9 + 3i)(9 - 3i)
A. 90 B. 72 C. 81 - 9i2 D. 81 - 9i
Mathematics
Add the polynomials.(12y + 8) + (-8y - 7)
A. -96y2 - 56 B. 4y2 + 1 C. 4y - 1 D. 4y + 1
Mathematics