This tally below shows the number of times that Jim and rob won games of checkers. What is the experimental probability that rob beats jim in future games? Jim: ROB:

Proportions in triangles solve for x

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%)

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6