4/9*3/9= 12/81=4/27
You have a 4 in 27 chance of drawing a red then a blue.
784 divide by 7 is 112 so answer 112
90% out of 105% which would be 0.85
3^-4 = 1/3^4 = 1/81
hope it helps!
The solution is 25% acid, which means 2.5 liters acid (10 x .25).
<span>you need that 2.5 liters to be 10%, or 1/10th the total. </span>
<span>the total would have to be 25 liters (2.5 x 10) so when you add to 10 to get 25 you get </span><span>15 liters. Hope I helped!</span>
