6.4x10^5 + 0.36x10^5 = 6.76x10^5, or 676,000
An event that is made up of two or more outcomes is called a compound event.
Hope this helps!
Fractions can be added and subtracted but only if they are like fractions or have a common denominator
Tangent = Opposite÷ Adjacent

So the answer is D) 2
What shape is it as I cannot answer without knowing the shape