Solve the following quadratic equation using the quadratic formula. Find the exact answer. If there are no real solutions, so state.2x2 - 18x + 40 = 0
A. x = 4 or x = 5
B. x = -4 or x = -5
C. x = 2, x = 4 or x = 5
D. x = 0, x = 4 or x = 5
Answer: A
You might also like to view...
Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. infinitely many solutions; {
-6x + 4y = -6} or {
12y = -18 + 18x}
B. {(-6, 4)}
C. no solution; ?
D. {(0,0)}
The following table shows the amount C, in billions of dollars, spent on cell phone service t years after 2000. t 5 6 7 8 C 113.42 126.55 138.13 142.48? ? A: Find the equation of the regression line.B: Plot the data along with the regression line.C: Based on the regression equation, how much would be expected to be spent on cellular service over a 5-year period?D: What amount does the regression line predict for 2011?
What will be an ideal response?
State the phrase as a mathematical expression. Use x to represent the variable.A number minus seven hundred five
A. x - 705 B. x + 705 C. 705x D. 705
Provide an appropriate response.When more people want to sell stock than want to buy stock, the price of the stock tends to drop.
A. True B. False