Presented below is information from Perez Computers Incorporated.

July 1 Sold $20,000 of computers to Robertson Company with terms 3/15, n/60. Perez uses the gross method to record cash discounts. Perez estimates allowances of $1,300 will be honored on these sales.
10 Perez received payment from Robertson for the full amount owed from the July transactions.
17 Sold $200,000 in computers and peripherals to The Clark Store with terms of 2/10, n/30.
30 The Clark Store paid Perez for its purchase of July 17.

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

Which rational number could be graphed between -4 and -5

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students