25 points for this question.
a tourist first walked 17 km with a speed of v km/h. then he hiked 12 km uphill with the speed that was 2 km/hour less than his original speed. the whole trip took him t hours.

how much time did the tourist spend on this trip if his original speed was 5 km/h?

Giving ad is congruent to bc and angle bcd is congruent to angle adc prove d e is going to ce

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

Which strategy is used by public health to reduce the incidence of food poisoning?