<span>4.5
If you are told that two-thirds a number plus 4 is 7 and you wish to figure the number you can make an algebra formula: (2/3)X + 4 = 7
To simplify the formula you want to get the X alone. Begin by subtracting 4 from each side. (2/3)X + 4 - 4 = 7 - 4, so you now have (2/3)X = 3. To get the (2/3)X to be just 1X multiply each side by 3/2, so ((2/3)X)x(3/2) = 3x(3/2) giving you X=4.5</span>
Answer
First subtract: 13 1/2 - 7 1/3 = 37/6
Second simplify: 37/6 = 6 1/6
Answer:
C
Step-by-step explanation:
L = 6W
Area A = LW = 600. So, 6W(W) = 600, W2 = 600/6 = 100, so W = 10. Then L = 600/10 = 60.
Perimeter P = 2L + 2W = 2(60) + 2(10) = 120 + 20 = 140.