Urgent archaeologists discovered a portion of a stone wall. to calculate its original diameter, they marked and
measured chord and its perpendicular bisector. what was the diameter of the original circular wall?

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?

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

10% of 1,900,000. show me how you got the answer