Mark and Elizabeth are creating a scatterplot of data, and calculating the LSRL. Since their evil teacher does not allow them to use calculators, this is a slow process. They decide to split the work up to save time. Mark decides to compute the correlation coefficient. “Done!” he quickly exclaims. “What?! No way you can be finished already,” Elizabeth says. “Well, I am” replies Mark. “And here you go: r is 6.3.” Should Elizabeth trust Mark and his work? Explain.

take it another

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

good luck on your studies! : )

david edward.