For Exercises 21-26, find the GCF and the LCM of each pair of numbers, 21. 36 and 45 22. 30 and 75 23. 78 and 104 24. 15 and 60 25. 32 and 45 26. 37 and 12

Ray ce is the angle bisector of zacd, which statement about the figure must be true? mzecd-mzecb mzace « 4mzacd zace - zdcb zecd zacd save and exit

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4