PLEASE ANSWER! 1. In order for ΔABC to be similar to ΔDEF, what must be true about the angles? Be specific.
2. If you know that ΔABC is similar to ΔDEF, and you know that ∠A = 52° and m∠E = 65°, what is m∠C? Explain how you arrived at your answer.
3. What is the difference between two figures being similar and two figures being congruent?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)