Simplify : 12 – ( x + 3 ) +10
Solution:
You can simply 12 – ( x + 3 ) +10 by rearranging the terms:
- 12 –x -3 +10
- 19-x
Posted in 6th Grade, Algebra Homework, Homework Answers, Math Answers | No Comments »
You can simply 12 – ( x + 3 ) +10 by rearranging the terms:
1. Let’s call the number of cookies Cara made “x”
2. First she sold three fifths of x(.6x)
3. The remaining amount is two fifths of x(.4x)
4. Then she one fourth of x;two fifths of “x” (.25*.4x = .1x)
5. .6x=.1x+200
6. .5x=200
7. x= 400
This is a well known “trick question”. It’s simply a series of squares with the digits reversed:
12 = 1 => 1
22 = 4 => 4
32 = 9 => 9
42 = 16 => 61
52 = 25 => 52
62 = 36 => 63
72 = 49 => 94
82 = 64 => 46
92 = 81 => 18
The arithmetic mean is the average.
http://en.wikipedia.org/wiki/Arithmetic_mean
Volume of wood is 72*54*48 = 186,624 cmcube; the mass would be 186,624 * 0.9 = 167,961.6 g.
42 + 52 =16 + 25 = 41
Please note that we rounded off the answer to the nearest integer since the number of complaints must be an integer.