0.123 repeating (only 23 repeating ) as fraction

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Find three consecutive numbers such that the sum of one-fourth the first and one-fifth the second is five less than one-seventh the third

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9