This is more a math question but no one is answering in the "math" section.

Compute 6.28x10^13 + 6.30x10^11. Express your answer to three significant figures.

Write the ratio of the first measurement to the second measurement

A thermometer measured the temperature inside a house as 78.4°F. A thermometer outside in the sun measured the temperature as 92.9°F. Steve thought the difference in temperatures was 14.5°F. Was Steve's answer reasonable? A.

What is the sample space for the probability model?

Raphael works 12 hours each week. He earns £4 per hour. Tom saves 1/3 of earnings each week. How many weeks does it take Tom to save £80?

Mrs. Shelley's puppy ran through paint and ruined her bedroom carpet! Look at the layout of her bedroom and decide how much carpet she needs to buy.

Every cupcake Jake bakes weighs 0.45 pounds how much will a box of 100 Cupcakes weigh

The surface area of the given cube is 150 square feet. a) 5 cubic feet b) 25 cubic feet c) 125 cubic feet d) 625 cubic feet

If x=7+root 40, find the value of root x+1by the root of x

The last time andy went bowling he had a mean score of 158 per game. After 3 games Andy has a total score of 473 He thinks he needs to score over 160 in game 4 to get a mean score greater than 158. Is he correct? Show a check of working

8*{[ (7+4*2-[ (11-7) * 4]}