Lithium has 3 protons. how many neutrons are in the isotope lithium-8?

Disadvantage to using tables and diagrams

Give an example of an addition problem in which you would not group the addends differently to add

Whats 999 divided by 9?

How many way can 4 people line up out of 20?

Three corners of a rectangular city block are located at (2,2), (2,-4) and (-5,-4) on a coordinate plane. What re the coordinates of the fourth Coordinate?

Best Buy sells CDS and DVDS. Jose bought 3 CDs and 2 DVDs for $58. Lisbeth bought 1 CD and 4 DVDs for $46. Determine the selling price for each

There is a 40% chance that you will be elected president of the history club. There is a 10% chance that your friend will be elected treasurer of the history club. You use a random number generator to randomly generate 50 numbers from 0 to 99.

Car A travels 105 miles on 3 gallons of petrol. Car B travels 80 miles on 9 litres of petrol. which car has the better petrol consumption (ie more miles per gallon) ? you may use the fact that 1 gallon=4.5 litres.

Nacy is saving 2 bucks from her allowance every week marco is saving 1 the frist week 2 teh second week 3 teh third week and so on at the end of ten weeks who got more money?

What two numbers multiply to get - 27 and add to 6