the area of a rectangle is x^2 - 13x + 30 find the dimensions and area of the rectangle of the perimeter is 30

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

How do you find the circumfrance of a circle?

What is the value of x in this triangle? a. 53° b. 62° c. 65° d. 118°