geometry
The volume of a sphere with radius r is (4/3)(pi*r^3). Use that.
General
What's the proper way to reference a book from Project Gutenberg (MLA format)? It doesn't have all the information for the book format, but it was originally published as a book, so the web page format doesn't seem right. (If it matters, the book is Lewis Carroll&#...
Science
When an antibiotic is used, some of the bacteria may be more able to survive it than others. The more-resistant bacteria survive to reproduce and pass their resistant genes to the next generation. The less-resistant bacteria don't get the chance to reproduce. Therefore, th...
Algebra
Looks right to me.
physics
That's probably because of significant figures. 15.0 m and 95.0 N both have three significant figures. Therefore, the answer should also have three significant figures. 1425 rounded to three sigfigs is 1430.
math
(88-8)*8
Algebra
Not quite. In your first step, you aren't doing the same thing to both sides of the equation. 5x-3 = 11+12x You correctly recognized that you need to isolate the x terms on one side. However, if you subtract 12x from the right, you need to subtract 12x from the left, not a...
Algebra
No, 40 is right. [8(6 - 1) - 1] - [2 - (5 - 2)] [8(5) - 1] - (2 - 3) 40 - 1 - (-1) 40
double check me please. math 012
(4)(5-w)/3 = -w (20-4w) / 3 = -w 20/3 - 4w/3 = -3w/3 20 - 4w = -3w 20 = w. Looks right to me.
math 012 double check me please
Your first two steps are fine. On the third, in which you go from 12x - 12 = 10x - 43 to -12 = -2x - 43 I think you mean to say you're subtracting 12x from each side. Adding 43 to each side leaves 31 = -2x. Divide each side by -2 to get x = (-31)/2. So, it looks like you w...
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