Solve the problem.Two stores sell a certain product. Store A has 33% of the sales, 1% of which are of defective items, and store B has 67% of the sales, 3% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives one of this product as a gift. What is the probability it is defective?
A. 0.012
B. 0.34
C. 0.02
D. 0.023
Answer: D
Mathematics
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Factor completely. If the polynomial cannot be factored, write "prime."3x3 + 6x2y - 45xy2
A. 3x(x - 3y)(x + 5y) B. (3x2 + 9xy)(x - 5y) C. 3x(x + 3y)(x - 5y) D. (x - 3y)(3x2 + 15xy)
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Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics
Simplify. Assume that variables can represent any real number.
A. 7t
B. 24
C. 7
D. 7t2
Mathematics
Solve the problem. Round to the nearest tenth, if necessaryFind the whole if the part is 12 and the percent is 35.
A. 17.2 B. 34.3 C. 3.4 D. 291.7
Mathematics