exam Maths Puzzle Numerical Ability

WHAT IS THE PEREMITER OF A SQUARE WITH ANAREA OF 49 SQUARE FEET?

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exam Other Question

5x+7y=b
mx+y=22

Find the vaule of m and b in the following systems so that the soultion to the system is (-3,4). Can you help me please to solve this equation:The sum of three consecutive integers is 78.Find the number.
Thanks