10 children attended a party, if all the children shake hands with each other, how many handshakes were at the party?

What's the opposite of + 25

A pizzeria makes pizzas in different sizes and with different toppings. The pizzeria wants its customers to have 12 options when they create a pizza. Which combination of size and toppings will give customers 12 options? Check all that apply. A.

Replace ∗ with a monomial so that the result is an identity: (5x + ∗) (5x - ∗) = 25x2-0.16y4

fred thinks of a number that is greater than 110 and less than 120. he can make his number with same number of hundreds, tens and ones. what is freds number?

An equation and the steps to solve it are shown below: 5x minus one over five times the quantity 20x plus 5 equals 9 Step 1: 5x - 4x - 1 = 9 Step 2: x - 1 = 9 Step 3: x - 1 + 1 = 9 + 1 Step 4: x = 10 In which step was the error made and why?

Which of the following painted light exactly as they saw it to represent reality? a. Impressionists c. Cubists b. Postimpressionists d. Abstract Expressionists

How can you tell that triangles are congruent without knowing the lengths of all sides and the measures of all angles? (subject-geometry)

True or false - "All quadrilaterals polygons."

Graph 9x+12y less than or equal to 925

Sam wants to write an equation to represent a proportional relationship with a constant of proportionality of 6. He writes the equation y = 6 + x. Is he correct. If not, what is the correct equation? Explain your answer.