Calculate then write in the Scientific notation

138x10^ (-1) + 7, 8 x 10^ (6) + 52 x10 ^ (3)

Alan has twice as many dimes as he has quarters and 10 more nickels than dimes. The remaining 35 coins are pennies. How many of quarters, dimes and nickels does he have if he has $2.50?

At Best Buy they have a stereo system that sells for $2,200 and it's on sale for 15% and sales tax is 7% what is the final cost

How does a digit in the ten thousand place compare to a digit in the thousands place

Alphabets = integers

Of the 16 clients at Victor's salon, 6 of them have black hair. What is the probability that a randomly selected client at Victor's salon has black hair? Simplify your answer and write it as a fraction or whole number. P (black) =

A Cashier at the local bank is expected to serve 12 customers every hour. In the past 15 minutes, he served 4 customers. Assuming the the cashier continues to work at the same rate, will he meet his goal? Explain

A wise man once said "300 reduced by 3 times my age is 138"

Write 4.1 - 3 using words

The eights of the students in ms. Mill's class ride the bus. if there are 24 students in the class, how many students ride the bus? Explain how to use equivalent frations to solve

When a product of intergers has an even number of negative factors then the sign of the product is what