A group of astronomers observed light coming from a star located a distance of 331,000,000,000,000,000,000,000,000 light-years from Earth. What is this distance expressed in scientific notation?

What is 9/16+1/2 equal to

Harry stacks several bricks, one over the other, to make a tower 114.30 centimeters high. If the height of each brick is 2.25 inches, how many bricks did Harry stack all together?

Marvin spent 3.4 hours which is 40% of his time at the recreational center playing ping pong. How long was Marvin at the recreational center?

My number has a tens digit that is 8 more than the ones digit. Zero is not one of my digits. Write the 2-digit number that matches the clues

Winnie has 7 soccer trophies she wants to display in an array. How many different arrays are possible? Explain

Is it more efficient to solve - 3x+y=1 for x? why or why notes

How many cups is in 1 liter

Together sarah and max brought in 24 cookies to share with the class. Sarah brought in 7 cookies. Write an equation to find out how many cookies brought in.

Add one set of parentheses to the expression 2x2 + 4 - 5 so that the value of the expression is 75 when x = 6.

Kim took C dollars to the sporting goods store to spend on new cleats. If the cleats cost $42.97, which of the following expressions represents the number of dollars Kim will have after buying the cleats? A. 42.97- B. C + 42.97 C. 42.97 + c D. C-42.