Lets see!
We need to use the pythagorean theorem (a^2+b^2=c^2) to check.
So..
15^2+ 17^2 = 19^2
225+ 289= 361
Hm 225 and 289 do NOT equal 361 therefore it is NOT a right triangle.
Volume of a triangle: 1/2(2b × h)
The 1/2 and 2 cancel each other out, so it's just b × h.
Area of base: 8 × 8 = 64 cm²
Height: 12 cm
64 × 12 = 768
The volume of the triangle is 768 cm³.
3x-2=-x-6
do the inverse and add 2 to the whole number on the other side which is -6
3x=-x-4
do the inverse with the variable -x and add x to 3x
4x=-4
divide -4/4 since the inverse of multiplication is division
x=-1