si un terremoto es 20 veces mas intenso que otro. ¿Cuánto más grnade es su magnitud en la escala de Richter?

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Write the expression as a single natural logarithm. 2 in a - 4 in y