Laura is 3 years older than twice Joseph’s age. If Laura is 27 years old, how old is Joseph?

Aglass triangular prism for a telescope is 5.5 inches long. each side of the prism's triangular bases is 4 inches long and 3 inches high. how much glass covers the surface of the prism? the answer choices are: 75, 76, 77, and 78. this is due tomorrow morning,

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.