Sorry i got nothing for you .. but i'll try to solve it shortly.
13 - 7 = (10 + 3) - 7 = (10 - 7) + 3 = 3 + 3 = 6
Answer:
The slope of the line. otherwise known as the gradient, can be found in the equation as the number in front of the x term.
In this case, it is - 1/2 (or -0.5, however you want to answer it)
The side length ratios of an isosceles right triangle are 1-1-

. So,
the length of a leg would be equal to the length of the hypotenuse divided by the square root of 2.
Using pythagorean theorem (c is the hypotenuse, a and b are the legs)
c²=a²+b²If the triangle is isosceles, two side lengths must be equal. In the case of a right triangle, the legs must be equal in length. So, b=a.
c²=a²+a²c²=2a²a²=c²/2a=c/
a≈c/1.414