3 1 10
------ + --------------- = ----------
3x x +4 7x
1 1 10
------ + ------------ = ----------
x x +4 7x
x + 4 + x 10
------------------ = ----------
x(x +4) 7x
2x + 4 10
------------------ = ----------
x(x +4) 7x
7x(2x + 4) = 10x(x+4)
14x^2 + 28x = 10x^2 + 40x
4x^2 - 12x = 0
4x(x - 3) = 0
4x = 0
x = 0
x - 3 = 0
x = 3
answer x = 0 and x = 3
372
The number 3 is in the hundreds place.
Look to the number immediately to the right.
We know that 7 is bigger than 3.
So, we add 1 to 3 and the rest become 0.
Answer: 400
United States
3.30404742 x 10^8 scientific notation
330,404,742 standard
Cincinnati
3.02605 x 10^5 scientific notation
302,605 standard
China
1.394015977 x 10^9 scientific notation
1,394,015,977 standard
True.
Since
,
and the solutions are decreasing functions.
You need to physically draw that on a graph
