Solve the equation.
+ 
= - 
A. 
B. 
C. 
D. 
Answer: A
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Solve.Find the greatest possible error for each of the following situations:(a) The length of a copper pipe is measured to be 10
in. with a ruler that is divided into sixteenths of an inch.(b) A motor oil is measured at 1
cups with a cup measure that is calibrated to the nearest 
of a cup.
A. (a) 
inch,
(b) 
cup
B. (a) 
inch,
(b) 
cup
C. (a) 
inch,
(b) 
cup
D. (a) 
inch,
(b) 
cup
Rewrite the series using summation notation. Use 1 as the lower limit of summation.3(12) + 3(22) + . . . + 3(62)
A. 
B. 
C. 
D. 
Evaluate.5 × 18 - 21 ÷ 3 + 82
A. 147 B. 9 C. 59 D. 161
Either the dimensions of two matrices or the matrices themselves are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A is 4 × 4; B is 4 × 4.
A. AB is 8 × 4; BA is 8 × 4. B. AB is 8 × 8; BA is 8 × 8. C. AB is 4 × 8; BA is 4 × 8. D. AB is 4 × 4; BA is 4 × 4.