el padre de andres tiene 30 años mas que el y su mama 5 años menos que su padre, averiguar la edad de andres sabiendo que la suma de las edades de sus padres es 7 veces la edad de andres

In the diagram of circle a what is m

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol