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Maths Puzzle
Numerical Ability
The sum of two numbers is 28. Their difference is 4. What are the two numbers?
thanks so much for the help!
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Solve each equation:
1. n - (8 + 4n) = 2(3n - 4)
2. 2z - 3 4 - z z + 1
------ - ----- = -------
4 2 3
3. 40x - 5 5 33 - 2x
I'm not sure how to get the square root of 16b^4
Could you help me? thanks!