7.) Andre measured the length of a pencil to be 27centimeters. The actual length of the pencil is 28 centimeters. Calculate the percent error for Andre's measurement? Show your thinking.

Vhich expression is equivalent to 6(3x + 4)? 9x + 418 x + 2418x + 49x + 10 i might ! i really do hope u see this and answer it

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?

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points