List 5 numbers, so that
- the first number is 1,
- the average of the first two numbers is 2,
- the average of the first 3 numbers is 3,
- the average of the first 4 numbers is 4,
- and the average of all 5 numbers is 5?

1, 3, 5, 7, 9. You could continue on with this pattern forever by adding two to each previous number and it would average out correctly.

rectangle: 9 1/8 x 4 1/9 = 37 37/72in

parallelogram: b times h= 10.3 x 6.2 = 63.86

trapezoid: a+b/2 times h= 42.5

volume of prism: l times w times h= 36

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.