Which expression is equal to 2√28 + 2√63? a: 13√7 b: 4√7 c: 10√7 d: 12√7

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Which math sentence can be used to determine if the triangle is a right triangle?

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.