Below are the test scores that a student earned in 4 different subjects. In which subjects did this student have an average higher than 80%? Select all that apply. Math: 82, 71, 95, 92
Reading: 74, 81, 82, 70
Science: 86, 77, 79, 90
Spanish: 68, 75, 83, 81

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.