Use Euclid’s division algorithm find the largest number that divides 1251,9377 and 15628 leaving remainders 1,2 and 3 respectively

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²