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Questions in mathematics

[Done] Solve the quadratic equation by completing the square. Enter your answers as a comma-separated list. \[ x^2 - 6x - 27 = 0 \]

[Done] If BC = 8.3, CD = 6.7, and AD = 11.6, find AB to the nearest tenth.

[Done] What is the solution to the system of equations \( c + 3d = 8 \) and \( c = 4d - 6 \)? Show your work.

[Done] Solve \( 8m^2 + 20m = 12 \) for \( m \) by factoring. Please show all work.

[Done] Ryker is given the graph of the function \( y = \frac{1}{2}x^2 - 4 \). He wants to find the zeros of the function but is unable to read them exactly from the graph. Find the zeros and give the answer to the nearest tenth.

[Done] What is 423.408 rounded to the nearest hundredth?

[Done] A cable cord is 78 meters long. Workers cut it into 30 pieces of equal length. How many centimeters long is each piece?

[Done] What is the solution for [tex]6r^2 - 10r - 24 = 0[/tex]?

[Done] Put the rainfall measurements in order from least to greatest. - 0.97 meters - 0.947 meters - 1.5 meters - 1.268 meters

[Done] If a square has an area of 81 square units, how long is each side?