3.0ft. The lenght of the third side of a triangle is 3.0ft.
The perimeter of a right triangle is the sum of the three sides P = a + b + c, where a, b, and c are the sides of the triangle.
If the perimeter and two sides of the triangle are known, it is possible to calculate the length of the third side.
P = a + b + c -------------> c = P - (a + b)
With P = 7.2ft, a = 1.8ft, and b = 2.4ft
c = 7.2ft - (1.8ft + 2.4ft)
c = 7.2ft - 4.2ft
c = 3.0ft
Divide 84 by 4. : 84 / 4 = 21 . There are 21 4s in 84
(x-16)(x+2)=0
x^1=0 for both
x^2= 16^2=256 -2^2=-4
I think it is b because probability of 2 is 1/6 then probability of 4 is 1/6. If you times them together 1/6x1/6 it will equal 1/36 so b