4/n = 4/5
a. n=5
b. n = 5/16
c. n= 3 1/5
d. n=50

a. n=5

Step-by-step explanation:

The 4 of numerator cancels each other. So, 1/5=1/n is what you finally have.

Therefore, n=5.

Hope this helps!!

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)