One of the oldest devices used for calculation is the abacus, as shown in the sample figure. Each rod names one of the positions we use in counting. Each bead on the bottom represents one unit in that column and each bead on the top represents 5 units in that column. The number illustrated in the sample figure below is 1,734.
?
Sample 
?
Choose an abacus to show 10,905.
?
A
B
?
?
C
D
?
A. C
B. B
C. D
D. A
E. none of these
Answer: A
Mathematics
You might also like to view...
Solve the problem.You burn 900 Calories will exercising for 35 minutes. What is your average power while exercising, in watts?
A. 1434.5 watts B. 2151.8 watts C. 1793.1 watts D. 2689.7 watts
Mathematics
Graph the equation.2x - 7 = 3x
A. 
B. 
C. 
D. 
Mathematics
Perform the operation and reduce to lowest terms.6
÷ 3
A. 2
B. 
C. 4
D. 20
Mathematics
Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x - 3y = 68x - 2y = 4
A. {(1, -3)} B. {(0, -2)} C. {(2, 0)} D. Cramer's rule does not apply since D = 0; ?
Mathematics