The board man family walked 2/5 of a mile in 2/7 of an hour. what is their unit rate in miles per hour? : p 2/7/2/5 1 2/5 miles per hour 2/7/2/5 5/7 miles per hour 2/5/2/7 1 2/5 miles per hour 2/5/2/7 5/7 miles per hour

(2/5)/(2/7) = 1 2/5 miles per hour

Step-by-step explanation:

To find miles per hour, divide miles by hours:

(2/5 miles)/(2/7 hour) = (2/5)·(7/2) miles/hour = 7/5 miles/hour = 1 2/5 miles/hour

It is often easiest to divide fractions by multiplying by the inverse of the denominator.

(2/5)/(2/7) = (2/5)·(7/2) = (7·2)/(5·2) = 7/5

When writing a problem of this sort in text (as here), parentheses are required around the numerator and denominator of the complex fraction. The meaning of 2/5/2/7 = 1/35 is very different from the meaning of (2/5)/(2/7) = 7/5.

207/8 is the right

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)