HELP!! PLEASE ITS IMPORTANT

BE = CD • AB/AC

Step-by-step explanation:

if you can see, both of the triangles are the same. The only difference is the size. BE is the same side as CD of the other triangle. To find the size difference you need to find a side that exactly is on the side of the other triangle. that means we need side ABC. If you divide AB by AC you will get the magnification factor.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

step-by-step explanation: