Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability.The first marble is blue and the second marble is blue.
A. 
B. 
C. 
D. 0
Answer: D
Mathematics
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Draw the graph of the equation.x2 - 16y - 8x = 0
A. 
B. 
C. 
D. 
Mathematics
You want to invest in an account that pays an annual interest rate of r, as a decimal. The amount P, in dollars, you need to invest so that $4593 per year can be withdrawn each year for 10 years is given by
.
A. Make a graph of P versus r. Include interest rates from 0.1 to 0.9.B. Is the graph concave up or concave down?C. Explain in practical terms the meaning of the concavity of the graph.
What will be an ideal response?
Mathematics
Factor the polynomial by grouping.x2 + 5x + 8x + 40
A. (x - 5)(x - 8) B. (x + 5)(x + 8) C. (x - 5)(x + 8) D. prime
Mathematics
Evaluate the limit after first finding the sum (as a function of n) using the summation formulas.
Mathematics