Arectangle has a length of 2x+ 7 and a width of3x+8y. write and simplify an express for the perimeter of that rectangle

Formulate alisha has a number in mind. if she adds three to her number the result is less than five. use this information to write and solve an inequality about alisha's number. then graph the solution set.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Two cities a and b are 1400km apart and lie on the same n-s line. the latitude of city a is 23 degrees. what is the latitude of city b. the radius of the earth is approximately 6400km.