If ad = y + 6 and dc = 2y, what is the length of dc?

Step-by-step explanation:

Step 1

Find the value of y

In this problem we know that

-----> equation A

see the attached figure to better understand the problem

so

we have

substitute the values in the equation A

solve for y

Step 2

Find the value of DC

we have that

substitute the value of y

dude   i don't even know. i've been trying for hours.

step-by-step explanation:

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.