A rectangle with a length of 12 and a width of 7 is similar to a rectangle with a length of 9. What is the width of the second rectangle? It says that it's B but can someone explain how?
A. 4
B. 5.25
C. 9.3
D. 15.4

shift 4 units up, and 1 unit left.

it will translate f(x) = 3^x to g(x) = 3^(x+1) + 4

- (2, -7)

- lines r and s and lines t and u must be parallel

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.