Which irrational number can be added to pi to get a sum that is rational?

Step-by-step explanation:

we know that

A number that can be made by dividing two integers is a rational number

Remember that the number zero is a rational number, because the number zero can be made by dividing two integers

example

In this problem we have the number

therefore

The answer is

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

14

step-by-step explanation:

14 x 3 = 42