Write 23 in scientific notation

Hannah serves tables at a restaurant. The first table she served on a Monday paid her $78.20. The bill amount was $68.00, and the rest was Hannah's tip. What percentage of the bill was Hannah tipped?

4x + 3.5x=180. How do you solve it

Find the answer and explain. 560.450-34.34872

Julia has 42 baseball cards. if she organized them in stacks of 6, how many stacks will she have

Find the area of a circle with a diameter of six. Either enter an exact answer in terms of pie or use 3.14 for pie and enter your answer as a decimal

An equation that results in a true statement has infinitely many solutions. Does the equation below have infinitely many solutions? 3 (2+x) = 3x+6

The diameter of the circle Michael drew was 14.4 cm. What was the approximate circumference of the circle if you use 3.14 for?

Roberto wants to make $2.00 using dollars, half of a dollar, and quarters. How many different ways can he make $2.00

Which number has least value 7.034 7.304 7.403 7.003

What is 1106 divided by 7?