- I need some math help. What would 4/3^-2, and 3/7^-2?

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When Ginsberg goes how will that work? IQ question? Determine the answer to the following equation with the correct number of significant figures:(17.543 + 2.19) × 1.04821 =? Traveling 50,000 mph, how long would it take to travel 17.4 light-years? A-level maths help.
A(7, 2) and C(1, 4) are two vertices of a square ABCD. Find the equation of the diagonal BD?