Let x be the <span>heights of a maple tree and y be the height of the cherry tree.
We know:
</span>
![\frac{x}{y} = \frac{5}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7By%7D%20%3D%20%5Cfrac%7B5%7D%7B2%7D%20)
<span>The new ratio is obtained like this:
</span>
![\frac{x+20}{y-20} = \frac{3}{1}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%2B20%7D%7By-20%7D%20%3D%20%5Cfrac%7B3%7D%7B1%7D%20)
.
From the above equation we get
![x= (y-20)\frac{3}{1} -20](https://tex.z-dn.net/?f=%20x%3D%20%28y-20%29%5Cfrac%7B3%7D%7B1%7D%20-20)
.
then
![\frac{ (y-20)\frac{3}{1} -20}{y} = \frac{5}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%28y-20%29%5Cfrac%7B3%7D%7B1%7D%20-20%7D%7By%7D%20%3D%20%5Cfrac%7B5%7D%7B2%7D%20)
Solving the above equation for y we get:
![y=160](https://tex.z-dn.net/?f=y%3D160)
So
So the first tree is (400-160=240) more taller than cherry tree.
The answer to this is f(x) = (3/2)x - 2.
So 10 % of 40 is 4
5% of 40 is 2
so 15% is 6
then you have to do 40-6
and then you get the answer of 34
5.394e+13 hope this helps
Answer:
y - 8 = x + 7
Step-by-step explanation:
To write the equation of a line use the point slope form. Substitute m = 1 and (-7,8).
![y - y_1 = m(x-x_1)\\y - 8 = 1(x --7)\\y - 8 = 1(x + 7)\\y - 8 = x+7](https://tex.z-dn.net/?f=y%20-%20y_1%20%3D%20m%28x-x_1%29%5C%5Cy%20-%208%20%3D%201%28x%20--7%29%5C%5Cy%20-%208%20%3D%201%28x%20%2B%207%29%5C%5Cy%20-%208%20%3D%20x%2B7)