The density of the gold is 772.8 kilograms\cubic meters
Average speed = total distance/ time taken
= 200/5 = 40 miles per hour.
- 3 1/2 can be rewritten as - 3 2/4
New equation will make it easier to combine like terms:
- 5 3/4 - 3 2/4
- 5 - 3 = - 8
3/4 + 2/4 = 5/4
You now have - 8 5/4. Simplify to get - 9 1/4.
Your answer is option C.
The labeled angles are both equal to c by the corresponding angles theorem.
Thus, a+b=c by the exterior angle theorem.