Find the value of the expression.|-4| + |6| - |-9|
A. 11
B. 19
C. -7
D. 1
Answer: D
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Solve the problem.A runner is competing in an 8-mile race. As the runner passes each miles marker (M), a steward records the time elapsed in minutes (t) since the beginning of the race, as shown in the table. What is the runner's average speed over the first 2 miles? Round your answer to four decimal places.
A. 0.0862 miles/min B. 0.0649 miles/min C. 0.0690 miles/min D. 14.4928 miles/min
Solve for the variable.
= 5
A. 6 B. 2 C. 7 D. 10
The abacus in the figure has "five" playing the role of "ten." (a) What number is represented on this five-bead abacus? (b) How would this number naturally be recorded?
A. (a) 56, (b) 111 B. (a) 980, (b) 12,410 C. (a) 96, (b) 341 D. (a) 196, (b) 1241
Use the unit circle to determine the value of the given expression or state that it is undefined.tan (390°)
A. 
B. 
C. - 
D. 