The way i would do it , i would flip the 7 over the equal sign and every time you flip a number over an equal sign that number turns the opposite so in this case, 7 turns to -7 and then you would get -7 + 12, which is 5.
X=31.200 because u times all of the numbers together and yeah
For the first question break it down to 2 rectangles and add the areas
14 * 4
and (12-4) * 8 = 8* 8
secon q:-
The other rectangle which has area of 72 is the third choice. Its perimmeter = 2(24) + 2(8) = 64
If Cheryl gets two marbles of the same color, then Claudia and Carol must take all four marbles of the two other colors. The probability of this happening, given that Cheryl has two marbles of a certian color is <span>. Since there are three different colors, our final probability is </span><span>.</span>