3. A train travels 120 km in 2 hours and 30 minutes. What is its average speed?

1. is the number written in scientific notation? if not, explain. 4.8 x 100^7 a) no; it is not written as a number times a power of 10. b) yes; the number is written in scientific notation. c) no; the first factor is not a number between 1 and 10.

The cost for a hotel room is $125 for one night and $250 for two nights. What will be the cost for the three nights?

Which are reasonable solutions for this situation if x represents the number of hot dogs sold and y represents the number of bottles of water sold? Check all that apply. (-1, 5) (0, 6) (2, 1) (1, 1.5) (1, 3) (2, 2)

The function of c=p+. 07p relates the price of an item p with its cost c after 7% tax and s added. A student has $12.50. What is the cost of the most expensive item he can buy?

A chemist needs to make 40 ml of a 25% acid solution. He has a 5% acid solution and a 30% acid solution on hand. If he uses the 5% and 30% solutions to creat the 25% solution, how many milliliters of each will he need?

4 square root 11• 4 square root 10

Right angled triangle calc: find a, b=8, c=11.31371

How many times larger is the value 65,000 than 650?

The missing number in the arithmetic sequence 90, 83, ___, 69 is: 74. 75. 76. 77.

For every half cup of lemonade recipe, 2 cups of water are needed. if I am making a large batch of lemonade that requires 3 cups of sugar, how many cups of water do I need?