Solve the equation by completing the square.4r2 + 22r = -15

A.
B.
C.
D.


Answer: B

Mathematics

You might also like to view...

Express the radical in simplest form, rationalize denominators, and perform the indicated operations.6 - 4

A. 6 - 4
B. 10
C. 2
D. -10

Mathematics

Use either the binomial theorem or Pascal's Triangle to expand the binomial.(a - b)6

A. -a6 + 6a5b - 15a4b2 + 20a3b3 - 15a2b4 + 6ab5 - b6 B. a6 - 6a5b + 15a4b2 - 20a3b3 + 15a2b4 - 6ab5 + b6 C. a6 + 6a5b + 15a4b2 + 20a3b3 + 15a2b4 + 6ab5 + b6 D. a6 - 6a5b - 15a4b2 - 20a3b3 - 15a2b4 - 6ab5 - b6

Mathematics

Write an equation for a sine curve that has the given amplitude and period, and which passes through the given point.Amplitude 5, period 4, point (7, 0)

A. y = 5 sin 
B. y = 5 sin 
C. y = 5 sin 
D. y = 5 sin 

Mathematics

Evaluate the definite integral of the algebraic function. ?  ?  Use a graphing utility to verify your results. Round your answer to 4 decimal places. ? 

A. 4.2422 B. 5.4526 C. -4.2422 D. 1.0439 E. 0.7140

Mathematics