Subtract.-10 - 21
A. -31
B. 11
C. 31
D. -11
Answer: A
Mathematics
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Tell whether the statement is true or false.The absolute value of any nonzero number is positive.
A. True B. False
Mathematics
Express the sum using summation notation. Use a lower limit of summation not necessarily 1 and k for the index of summation.(a + 1) + (a + d) + (a + d2) + . . . + (a + dn)
A. 
B. 
C. 
D. 
Mathematics
Find the length of the unlabeled side in the figure. Then find the perimeter and area of the figure. 
A. unlabeled side = 6 ft P = 111 ft A = 155 ft2 B. unlabeled side = 6 ft P = 74 ft A = 255 ft2 C. unlabeled side = 6 ft P = 37 ft A = 215 ft2 D. unlabeled side = 12 ft P = 74 ft A = 171 ft2
Mathematics
Multiply and simplify.
? 
A. - 
B. 
C. 
D. -12
Mathematics