I have 6 red balls and 4 blue balls in a bag. I withdraw a ball from the bag, note the colour and do not replace it. I then withdraw a second ball from the bag and note the colour.
What is the probability of withdrawing a red ball and a blue ball in any order?
Give your answer correct to 3 decimal places.
You could use a probability tree to help you with your calculations though you do not have to show it.

Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup