Identify whether each system of equations has infinitely many solutions or no solution. 1. 4x + 8y = -8
2. 2x - 3y = 6
3. 2x + 2y = 6
4. 2x + 5y = -5

please help me out! ! it's due Thursday and i wanna turn it in as soon as possible. Thank you!!!

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

The two cylinders are similar. if the ratio of their surface areas is 9/1.44 find the volume of each cylinder. round your answer to the nearest hundredth. a. small cylinder: 152.00 m3 large cylinder: 950.02 m3 b. small cylinder: 972.14 m3 large cylinder: 12,924.24 m3 c. small cylinder: 851.22 m3 large cylinder: 13,300.25 m3 d. small cylinder: 682.95 m3 large cylinder: 13,539.68 m3