Answer:
yes
Step-by-step explanation:
42/54 = 6*7/6*9 = 7/9
7/9 = 42/54
41/9 = 4.5 with a bar over 5 because it is repeating
Every single one of those polynomials factors. When factored, your expression looks like this:

. When you cancel the like factors out, what you're left with is this:

. That means that b = 9, c = 1, and d = -2
Multiples of 7: 7,14,21,28,35, 42.....
The definition of a right triangle is a triangle with a right angle. Therefore one of the angles of the triangle is 90 degrees. The second angle is 61 degrees. The angles of a triangle sum to 180 degrees.
90 + 61 = 151
180 (sum of angle degrees in a triangle) – 151 (sum of 2 of angles of the triangle) = 29 (third angle measure)
Therefore the missing angle is 29 degrees
Hope this helps you! :)