On a cold winter morning, the temperature was -4F. By noon, the temperature increased 4. What was the temperature at noon?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Jane’s favorite fruit punch consists of pear, pineapple, and plum juices in the ratio 5: 2: 3. how many cups of pear juice should she use to make 20 cups of punch?

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.