Two numbers have a sum of 23 and a difference of 9. Find the two numbers

The numbers are 16 and 7

Step-by-step explanation:

Let the numbers be x and y

x+y = 23

x-y = 9

Add the two equations together

x+y = 23

x-y = 9

2x = 32

Divide each side by 2

2x/2 = 32/2

x = 16

Now subtract the two equations

x+y = 23

-x +y = -9

2y = 14

Divide by 2

2y/2 = 14/2

y = 7

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.