In the figure, . if the ratio of the perimeter of to that of is 3: 5 and the sum of the perimeters is 320, find the perimeter of each triangle. a. perimeter of = 192 perimeter of = 128 b. perimeter of = 120 perimeter of = 200 c. perimeter of = 200 perimeter of = 120 d. perimeter of = 128 perimeter of = 192 select the best answer from the choices provided a b c d

Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter μ. select the correct answer below: h0: μ≥40; ha: μ< 40 h0: μ≤40; ha: μ> 40 h0: μ≠40; ha: μ=40 h0: μ=40; ha: μ≠40