Covalent solids consist of an ordered array of

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?