PLEASE I NEED HELP

Solve the system of equations.

–5x – 12y – 43z = –136

–4x – 14y – 52z = –146

21x + 72y + 267z = 756

Question options:

x = 6, y = 9, z = –6

x = 1, y = 3, z = 4

infinite solutions

no solution

How many solutions does the nonlinear system of equations graphed bellow have?

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Find the 6th term of the expansion of (2p - 3q)11. a. -7,185,024p4q7 c. -7,185p4q7 b. -7,185,024p6q5 d. -7,185p6q5 select the best answer from the choices provided a b c d