(15−4i)(6−3i)=a+bi In the equation above, a and b are real numbers and i=−1‾‾‾√. What is the value of a?

a=

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16