At a garage, 820 cars were given a safety test. if 75% of them passed the safety test, how many cars were rejected?

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.