a chemist has a 30% and a 45% acid solution. what amount of each solution should be used to make 500ml of solution with 35% acidity?

a)133 1/3 ml of 30% solution and 366 2/3 ml of 45% solutionb)250 ml of each solutionc)333 1/3 ml 30% solution and 166 2/3 ml of 45% solutiond)400 ml of 30% solution and 100 ml of 45% solution

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?