Ascientist wants to create 120 ml of a solution that is 30% acidic. to create this solution, she has access to a 20% solution and a 45% solution. how many millimeters of each solution should she combine to create the 30% solution? solve this problem using a system of two equations in two variables.

Atrucker had a load of grain containing 2 tons. she unloaded 1 ton and 1,200 pounds at the warehouse. how much grain does she still have left on the truck?

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles