At Admiral Middle School there are 350 lockers in Hallway B, numbered 1 – 350. All of the lockers are closed. Student #2 decides to run through Hallway B and opens every locker that is a multiple of 2. Student #3 runs through and changes the state of every locker that is a multiple of 3 (if it is open, he closes it. If it is closed, he opens it). Then student #4 runs through the hall and changes the state of every locker that is a multiple of 4. Finally, student #5 changes the state of every locker that is a multiple of 5. How many lockers are open after student #5 runs through Hallway B? Hint: The LCM of 2, 3, 4 and 5 is 60.

sorry i just need to anwers this to get points

step-by-step explanation:

jml angle lkj & angle mj = lm

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.

step-by-step explanation:

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.