Your multiplying patterns with decimals. what os 0.1×30 equal

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?

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Arectangle has a length of 6cm by 8cm what is the length of a diagonal of the rectangle