7. Two triangles are similar. The length of a side of one of the triangles is 4 times that of the corresponding side of the other. Determine the ratios of
the perimeters and the areas of the polygon.​

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?

Write each rational number in the form a/b, where a and b are integers. 1. 5 1/6 2. -12

Adevelopmental psychologist has prepared a training program that according to a psychological theory should improve problem solving ability. for the population of six-year olds, the average score on a standardized problem-solving test is known to be μ = 80 with σ = 10. to test the effectiveness of the training program, a random sample of 18 six-year-old children were selected. after training, the average score for this sample is m = 84.44. the experimenter used an alpha level of .05.perform the hypothesis test for this experiment.