Solve.Nine times the sum of 5 and a number equals 90. Find the number.

A. -45
B. 5
C. 45
D. -5

Answer: B

Mathematics

Use the method of variation of parameters to solve the differential equation.D2y + 8Dy + 12y = 5x

A. y = C₁e^-2x + C₂e^-6x + x
B. y = C₁e^-2x + C₂e^-6x +  - x
C. y = C₁e^2x + C₂e^6x -  + x
D. y = C₁e^-2x + C₂e^-6x -  + x

View

Mathematics

Complete. =

A.
B.
C.
D.

View

Mathematics

Find the percent using a proportion. Round your answer to the nearest tenth if necessary.What percent of 187 feet is 10.7 feet?

A. 1747.7% B. 0.2% C. 5.7% D. 0.1%

View

Mathematics

Simplify each side of the equation, if possible. Then solve the equation. - 3 + 10 = 12m - 11 - 11m + 4

A. m =
B. m = 13
C. m =
D. m = 12

View

Mathematics