Given ∠BAC ≅ ∠DAC, ∠DCA ≅ BCA
Prove BC ≅ CD

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries

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?

How do you find the distance of each number from the mean