A hiker starts hiking in Death Valley at an elevation of 143 feet below sea level. He climbs up 435 feet and enjoys the view. Then he climbs up another 267 feet. What is his new elevation relative to sea level?

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

Is it true or false i’m trying to pass this test so i can leave school

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%)