Which of the following expressions is equivalent to -5.4 - (2.1 + 1.8)? -5.4 + -(2.1 + 1.8) -5.4 + (-2.1 + 1.8) -5.4 - (-2.1 - 1.8) -5.4 - (2.1 - 1.8)

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets,x, and the number of student tickets,y. find the solution and explain what it means. i'll you if you me

Which value is not a solution of 8x^3 – 1 = 0

What is the missing step in this proof ?