Select all of the equations that have no real solution.

5x - 1 - 2x = 3x - 7

6x - (x - 2) = 5x - 2

-3(5x + 3) = -15x - 9

10x + 4 + x = 4 + 11x - 1

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.