Simplify the expression

2\sqrt(5)+9\sqrt(7)

Step-by-step explanation:

2\sqrt(20)-3\sqrt(7)=4\sqrt(5)-3\sqrt(7)

4\sqrt(5)-3\sqrt(7)-2\sqrt(5)=2\sqrt(5)-3\sqrt(7)

2\sqrt(5)-3\sqrt(7)+4\sqrt(63)=2\sqrt(5)+9\sqrt(7)

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.