In order to estimate the proportion of parents in a large school district in favor of changing the start time of school from 7:30 AM to 8:30 AM, the district sends a letter home to every family. Only 324 families returned the survey, but the results indicated that 68% of the families are in favor of changing the starting time of school. Which of the following is true about the design of this survey and the estimated proportion of parents in a school district in favor of changing the start time of school from 7:30 AM to 8:30 AM?

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

Find the area and perimeter of each composite figure. use 3.14 for π. round your answer to the nearest tenth. a square and a right triangle share a common side. image long description a 3-meter by 0.5-meter rectangle has triangles attached like wings to the 3-meter sides. the other two sides of both triangles measure 2.5 meters. the height of each triangle is 2 meters. a 6-inch by 4-inch rectangle has 2 half-circles attached like wings to the 6-inch sides. the radius of each half-circle is 3 inches. find the surface area and volume of each figure. use 3.14 for π. round your answer to the nearest tenth. a right circular cylinder has a base radius of 6 yards and a height of 20 yards. a rectangular prism has a base that is 9 centimeters long and 7 centimeters wide. the height is 2 centimeters. a rectangular prism has a base that measures 11 millimeters by 11 millimeters. the height is 11 millimeters.

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?