Need ! will choose the you need a 70% alcohol solution. on hand, you have a 200 ml of a 35% alcohol mixture. you also have 90% alcohol mixture. how much of the 90% mixture will you need to add to obtain the desired solution?

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.