Write 2,784 in expanded notation as a addition expression.

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!

Which of these statements is correct? the system of linear equations 6x - 5y = 8 and 12x - 10y = 16 has no solution. the system of linear equations 7x + 2y = 6 and 14x + 4y = 16 has an infinite number of solutions. the system of linear equations 8x - 3y = 10 and 16x - 6y = 22 has no solution. the system of linear equations 9x + 6y = 14 and 18x + 12y = 26 has an infinite number of solutions.