What expression do you substitute for y

Another way to wright 300+7+5/10+8+100

Factorise 8x^2-30x-27=0

You have 784 grams of a radioactive kind of europium. If its half-life is 13 years, how much will be left after 39 years?

Factor out the coefficient of the variable term. 0.75z-6.75

A home builder wants 5 acres of land split into 13 equal sections. Three of these expressions give the number of acres of land each home will have. Which one does NOT? A. 13 divided by 5 B. 1/13 of 5 C. 5/13 D. 5 divided by 13

Triangle ABC is a right triangle where B is the right angle, AB = x, and BC = x. What could be the first step of a proof BD of the triangle divides the hypotenuse into two segments of equal length?

Tommy plotted the opposite of one. Alicia plotted the opposite of two. Which Number is greater in value? Explain.

Anita sells stuffed bunnies and puppies to a toy store. She sells each bunny for $8.00 and each puppy for $10.00. This week, Anita wants to sell more than 30 stuffed animals and needs to earn a minimum of $450.

Jimena draws a figure with two pairs of parallel opposite sides. The four sides are not all the same length, and the figure has no right angles. Which two figures could she have drawn?

Donnie is planning to purchase a new tablet for $750. The tax rate in his city is 5.75%. How much will the tablet cost him?