A glass prism on a chandelier is 61 millimeters long. A base of the prism is an equilateral triangle with side lengths of 9 millimeters and a height of about 5.4 millimeters. What is the approximate surface area of the prism?

Find the solution of this system of equation -7x+y=-20 9x-3y=36

The total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'