The Pythagorean Theorem states that

, where a and b are the legs of a right triangle and c is the hypotenuse of the same triangle.
3) 7.67 x 10 ^-2
4) 3.3 x 10 ^3
The answer is D) -3 Hope this help
You need two equations to solve a two-variable equation.
(2/7)m - (1/7) = 3/14
2m/7 =(3/14) + (1/7)
2m/7 = (3/14) + 2(1/7)
here we are multiplying 2 with 1/7 to make the denominator same for addition.
2m/7 = (3/14) +(2/14)
2m/7 = (3 + 2)/14
2m/7 = 5/14
2m = (5 *7)/14
2m = 35/14
2m = 5/2
m = 5/4
m = 1.25
So the value of "m" is 1.25