Solve the problem.One television has a rectangular screen that is 9 inches by 16 inches. Another has a rectangular screen that is 6 inches by 10 inches. The size of a television set is commonly given by the length of the screen's diagonal. What is the difference of the diagonal lengths for these two sets?
A. (
+ 2
) in.
B. 
in.
C. (
- 2
) in.
D. 201 in.
Answer: C
Mathematics
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Evaluate the determinant.
A. -10 B. 10 C. 186 D. -130
Mathematics
Solve the problem.Find the opposite of -2.8
A. 0
B. 2.8
C. -2.8
D. 
Mathematics
Find the first term a1 and the common difference d of the arithmetic sequence.
, - 
, - 
, - 
, . . .
A. a1 = 
, d = - 
B. a1 = - 
, d = - 
C. a1 = 
, d = 
D. a1 = - 
, d = 
Mathematics
Solve the problem.In the following formula, f(x) is the minimum number of hours of studying required to attain a test score of x: 
How many hours of study are needed to score 94?
A. 6.36 hr B. 63.60 hr C. 100.03 hr D. 14.53 hr
Mathematics