URGENT If a-b=2, then solve the following:
1. 2^a/2^b
2. 5^a/5^b
3. 4^0.5a/2^b
4. 3^b/3^a

Determine whether triangle tjd is congruent to triangle sek  givent (-4,-2), j (0,5), d (1,-1), s (-1,3), e (3,10), k (4,4)and explain the reason.  select one: a. yes, by sssb. no, by aasc. no, by asad. yes, by sas

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x

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%)