What is the perimeter of rectangle EFGH?

StartRoot 10 EndRoot + StartRoot 29 EndRoot units
2 StartRoot 10 EndRoot + 2 StartRoot 29 EndRoot units
22 units
39 units

Which statements about these triangles is true

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.

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%)