The reciprocal of 5 and 4/9

1/5 and 9/4

Step-by-step explanation:

Reciprocal is basically the vertically flipped version of the original number. To find the reciprocal, rewrite the numbers in fractions and then swap the numerator and the denominator. So 5/1 becomes 1/5, 4/9 becomes 9/4.

9/49

Step-by-step explanation:

First of all, you need to get 5 4/9 out of an improper fraction. It will be 49/9. Reciprocal means opposite. It is super simple. Now you have to flip the numbers, so you would get 9/49.

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.