Answer:
Step-by-step explanation:
Change the 2/3 to 4/6
Now the ratio becomes 3:4:6
So the number of each is
3x + 4x + 6x = 520
13x = 520
x = 40
Red = 3*40 = 120
Yellow = 4*40 = 160
Blue = 6 * 40 = 240
Total = 520
0.4375 because if you divide it by its self youll get it
Given, the rate of growth of St. Augustine grass is
cm per week.
We have to find the number of weeks that the grass grow to
cm.
Let's take the number of weeks be x.
In 1 week the grass grow =
cm
So in x weeks the grass grow =
cm
So we can write,
![\frac{4x}{7} =\frac{12}{7}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%7D%7B7%7D%20%3D%5Cfrac%7B12%7D%7B7%7D)
To solve it for x, first we will move 7 to the right side by multiplying it to both sides. We will get,
![(\frac{4x}{7}) (7) =(\frac{12}{7})(7)](https://tex.z-dn.net/?f=%20%28%5Cfrac%7B4x%7D%7B7%7D%29%20%287%29%20%3D%28%5Cfrac%7B12%7D%7B7%7D%29%287%29)
![4x =(\frac{12}{7})(7)](https://tex.z-dn.net/?f=%204x%20%3D%28%5Cfrac%7B12%7D%7B7%7D%29%287%29)
![4x = 12](https://tex.z-dn.net/?f=%204x%20%3D%2012%20)
Now to get we will move 4 to the right side by dividing it to both sides. We will get,
![\frac{4x}{4} =\frac{12}{4}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%7D%7B4%7D%20%3D%5Cfrac%7B12%7D%7B4%7D)
![x = 3](https://tex.z-dn.net/?f=%20x%20%3D%203%20)
So we have got the required answer.
After 3 weeks the grass grow
.
Answer:
35
Step-by-step explanation:
x=35
y=7