You estimate that there are 41 marbles in a jar. the actual amount is 71 marbles. find the percent error. round to the nearest tenth of a percent if necessary.

If the measure of xyz is 81 what is the measure of yz

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]