By Friday he should have done 20 sit-ups because every day he is doing 4 more than the last.
If it's in halves, then two.
We'll use the Pythagorean Theorem
130^2 = side^2 +50^2
side ^ 2 = 16,900 -2,500
side ^ 2 = 14,400
side = square root (14,400)
side = 120 feet
A. =4^(-11/3)*4^(2/3)
=4^(-9/3)
=4^(-3)
=1/64
Proabably. 5 because if there is 2 sides on a coin then you should divide 10÷2 which is 5.
