Math Question: What value does the 2 represent in the number 52.3?​

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?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.