The highest pt in California is 14,494 above sea level. The lowst pt at 282 ft below sea level. What is the difference in elevation between these two points?

I think I have to subtract the two and get the difference.  Which is 14,212 ft but I'm not sure.

The larger of two numbers is five more than six times the smaller number. The sum of the numbers is fifty-four. Find each number

The larger of two numbers is five more than six times the smaller number. The sum of the numbers is fifty-four. Find each number 

10/12/15

twice a number increased by seven 15-21 . what is the number?

i dont understand

10/12/15

The ratio of the interior angle is 1 : 4 : 5. What are the angle measures

 please tell me the awnser

10/12/15

The height of a triangle is 1 less than half the base of the triangle. The area of the triangle is 6 cm2. Find the base and height of the triangle.

I don't know how to do this math question. it is quadratic formula  

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