Which set of three numbers can be used to make a right triangle? Group of answer choices

4, 5, 6

3, 4, 5

5, 6, 7

Will give brainliest sum of arithmetic series (sigma notation) find the numerical answer to the summation given below. (image shown below)

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9