Close. The answer is 40. 1 gallon of paint covers 300 square feet. Square feet is the units of area. So you are provided with the dimensions of the rectangle. 20 X 600. When you multiply that you get 12000. 12000 divides by 300 is 40.
If I'm understanding the question correctly, this is how I would estimate the sum.
I would round each number to the nearest tens place.
33 would be rounded down to 30.
89 would be rounded up to 90.
Then I would do 90+30.
Answer:
2x/(x+3) +3/(x-3) = 8/(x^2
[2x(x-3) +3(x+3)]\( x^2 - 9) =8/(x^2 -9)
2x^2 -6x +3x +9=8 (x^2 -9) /(x^2 -9)
2 x^2 -3x +9 -8=0
2 x^2 -3x +1 =0
2x^2 -2x -1x +1 =0
2x(x-1) -1(x-1)=0
(x-1)(2x-1)=0
either, or, 2x-1=0
x-1 =0 2x =1
x =1 x= 1/2
hence, x= 1, 1/2
Green, because purple and green have 3 cubes so they both have the same probability of being chosen
<em>Answer:</em>
<em>1cm = 50
</em>
<em>2 cm = 50 x 2
</em>
<em>3cm = 50 x 3
</em>
<em>and the inverse:50m = 50/50 = 1cm
</em>
<em>100m = 100/50 = 2cm
</em>
<em>150m = 150/50 = 3cm
</em>
<em>381m = 381/
</em>
