Find the difference.y + x, for x = -5 and y = 8
A. 3
B. -13
C. 13
D. -40
Answer: A
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Solve the problem.A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is of tinted glass that transmits only one-fifth as much light per unit area as clear glass does. The total perimeter is fixed. Find the proportions of the window that will admit the most light. Neglect the thickness of the frame.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Simplify using the rules for exponents.(n6)2(m6n)5
A. m30n13 B. m11n13 C. m30n60 D. m30n17
Determine whether the statement is true or false.Some irrational numbers are rational.
A. True B. False
Solve.How many different 4-digit sequences can be formed using the digits 0, 1, . . ., 9 if repetition of digits is allowed?
A. 10,000 B. 0.16666667 C. 36 D. 6,561