4/7=28/(x+18)
4/7 =28/x+18
-18 | -18
|
__________
-17 2/7=28/x
*28 | *28
|
__________
-484 = x
Answer is 12ft.
Area of a triangle is base x height / 2
A = bh/2
24 = 4h/2
h = 12
I'm pretty sure the answer would be D... A triangle has three angles, and three sides. it already has to angles used and one left I guess...
Each column is a digit, and the top two beads each represent 5 and the bottom 5 beads each represent 1. To read it, you add up the values of the "top" beads that are dropped down and the "bottom" beads that are raised up, and you read the number left to right.
