4(3x-5) = -2(-x+8)-6x
Distribute the 4 and the -2.
12x - 20 = 2x - 16 - 6x.
Collect like terms: (2x - 6x).
12x - 20 = -4x - 16.
Add both sides by 20 and 4x.
16x = 4.
Divide by 16.
x = 4/16.
Simplify the fraction by dividing both top and bottom by 4.
x = 1/4.
Perimeter of a square with sides, s, is: s + s + s +s or simply 4s.
If 4s = 36 in., then each side = 36/4 = 9 in.
The area of a square is s^2 so 9^2 = 81 in.
Do you mean like 3 different ways to represent a ratio?
4 to 3
4:3
4/3
Woo, Phill's going to be the richest person in the world!!
Ahh, no idea...whoops I read the riddle before reading "This is for CPhill."
No formula...
0.976 --> I usually get the decimal into this form: #.#....
So, 0.976 --> 9.76 and then X 10^(#)...
In this case, you have to somehow get 9.76 into 0.976 so you use X 10^(-1) [moving decimal place to the left once]
0.976 --> 9.76 X 10^-1
Goldfish that are dead?
The 10^ 7 basically means you are multiplying by 10, 7 times which is the same as moving the decimal place 7 times to the right.
So, 1.96 --> move the decimal place 7 times to the right and add 0s along the way...
It helps you write large numbers in a much more concise from:
19600000 --> 1.96 X 10^7 is easier to input and look at...
9.331442 X 10^6.
