What is the greatest common factor of 20, 45x

It should be 5 because there is no number greater than that that fits with both numbers

The question asks us to find the GCF (Greatest Common Factor) of 20 and 45x. We can do this by listing the prime factorizations of each number.
20: 2 × 2 × 5
45: 3 × 3 × 5
We can see that the only common factor of the two prime factorizations is 5. Therefore, the GCF of 20 and 45x is 5. Hope this helped!

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle