Area= base x height
So, the base is 9 1/4 and the height is 18 feet
so, the Area= 9 1/4 x 18
9 1/4 x 18
= 166.5
This is a simple proportion problem. On the left side of the colon : there's a 1 and xy. On the right it's yz and a 2. This means for every one xy there will be two yz. So, if there are 2 xy there are 4 yz
Based on the emperical rule
the distribution will be as follows
btwn 80 n 85 on the test - 34%
btwn 80 n 95 on the test - 82%
below 85 on the test - 50%
<span>above an 80 on the test - 84%</span>
