Raise 2/7 to a fraction with denominator of 28.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid