How do you solve equations like this? How do you multiply whole positive numbers by negative fractions? The question in the picture: What is the sign of 9 • (-0.5)?

The answer to this problem isn't necessary, but I'd appreciate it if it was included <3

The triangles are similar. what is the value of x? show your work.

What is the solution to the inequality? 6x−5> −29, a x> −4 bx> 4 cx< 4 dx< −4

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?