Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.A computer can do one calculation in 1.4 × 10-7 seconds. How long would it take the computer to do a trillion (1012) calculations?
A. 1.4 × 105 sec
B. 1.4 × 10-7 sec
C. 1.4 × 106 sec
D. 1.4 × 1012 sec
Answer: A
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Find the product.(5m2)(4m3)
A. -20m5 B. 20m5 C. 20m D. -20m
Use elimination to solve each system of equations, if possible. Identify the system as consistent or inconsistent. If the system is consistent, state whether the equations are dependent or independent. -6x + 6y = -244x + 2y = -8
A. infinitely many solutions and dependent B. (0, -4); consistent and independent C. (-1, -3); consistent and independent D. (0, -3); consistent and independent
Answer the question or provide the appropriate response.A rock is thrown upward from the top of a 14-foot building with an initial velocity of 83 feet per second. Describe how you could use the graph of y = -16x2 + 83x + 14 to find the maximum height attained by the rock.
A. Find the x-coordinate of the vertex. B. Find the positive x-intercept. C. Find the y-intercept. D. Find the y-coordinate of the vertex.
Simplify the expression.
A. 
B. 
C. 
D. 
E. none of the above