Geoffrey thinks that the sum of 5x2y3+6x+7y and 8y+4x3y2+2xis 9x2y3+8x+15y. Explain Geoffrey's error, and find the correct sum.

What is negative 4 greater than or less than x?

To start a board game, the player who rolls two sixes gets to go first. What is the probability that a player will roll two number cubes and get two sixes?

Arderi Air Conditioning sells one primary model of air conditioner. Each unit of this model costs them $61.25 to produce, but it sells for $142.50 apiece.

the perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. Find the length of a side of the equilateral triangle

How do you find the least common multiple of two numbers?

What is 10a+8 factorised

Higher Order Thinking Let a = any rational number. Is the absolute value of a different if a is a positive number or a negative number? Explain.

Where do you put 2/3 on a number line

How do you write 50 percent as a fraction in simplest form?

Lou started his savings account with 50$ he now only has 31$. What percent of change did his savings account have?