Write the ratio of corresponding sides for the similar triangles and reduce the ratio to lowest terms. 8
10
4
a а
5
2
10
8
5
b
4
8
4
5
10
5
C
5
1
+100
10
2
d
10 8 5
4 5 .
NI

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

How is working backward similar to solving an equation?