Use a graphing utility to find or approximate solutions to the equation. If necessary, round your answers to three decimal places.2n2 = -12n - 3

A. -0.131, -2.869
B. -0.261, -5.739
C. -3.261, -8.739
D. 0.24, -6.24


Answer: B

Mathematics

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Rationalize the denominator. Assume that all variables represent positive real numbers.- 

A. - 
B. -7
C. -20
D. - 

Mathematics

Write the number in decimal notation.The average high temperature in Death Valley, averaged over one week, was one hundred twenty-three and fifty-seven hundredths °F.

A. 123.057 °F B. 123.57 °F C. 123.507 °F D. 123.0507 °F

Mathematics

Find the surface area of the right square pyramid shown below.

Mathematics

Let x represent one number and let y represent the other number. Use the given conditions to write a system of nonlinear equations. Solve the system and find the numbers.The sum of the squares of two numbers is 65. The difference of the two numbers is 7. Find the two numbers.

A. -8 and -1 B. 1 and 8 or -8 and -1 C. -1 and 8 or -8 and 1 D. 1 and 8

Mathematics