Which is a factor of 5xy − 40x − 15y + 120?
a. 2
b. y − 8
c. x − 4
d. x + 6

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

Which of these angles are complementary? a. 45o and 45o b. 63o and 117o c. 45o and 135o d. 90o and 45o

Find all the angles that satisfy the equation cos(θ)=32