exam
Maths Puzzle
Numerical Ability
2 times a number, increased by 28 is less than or eaqual to 6 times that number.
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I cannot figure this out. I tried systems of equations, both substitution and elimination, but could not get it to solve. Thanks
If cd=4 and C^2+d^2=10, what is (c+d)^2
Solve the following systems by graphing.
x - 2y = 8
3x - 2y = 12