8/4=12/x
Would be the ratio.
Solve it:
8/4 =12/x
2=12/x
2x=12
X=6
6a-4 = 3a+54
3a = 58
a = 58/3
a= 19.333
1/2 as an exponent means, square root of the number, so when you have a number with the exponent of 1/2, you should find the square root of the number
In short, Your Answer would be Option D
Hope this helps!
15
as
15²=12²+9²(using Pythagoras theorem)
or
225= 144+81
225=225
(the Pythagorean theorem, also known as Pythagoras's theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. )
I think it’s the last one sorry if I’m wrong
