None of the pairs will deliver (g×f)(a). If you intend (g∘f)(a), then ...
... selection 3 is appropriate.
<u>We are given:</u>
We know that the sum of all interior angles of a Pentagon is 540°
we are given 4 out of the 5 angles
<u>Solving for x:</u>
since the sum of all 5 angles is 540°:
75 + 130 + 135 + x + 90 = 540
x + 430 = 540
x = 540 - 430
x = 110°
.15% translates to
.0015, and "of" means to multiply. so .0015 multiplied with 43 is
.0645