Abirthday cake was cut into equal pieces, and five pieces were eaten. the fraction 2/7 shows how many pieces are left. according to the fraction, how many pieces were not eaten a.2 b.7 c.12 d.5

Me write an equation for the interior angles of this triangle that uses the triangle sum theorem

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?

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?