A tree 4.7 m tall casts a shadow 8.2 m long. Calculate the angle of elevation of the sun.

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.