Answer:
C. Stratified Sampling
Step-by-step explanation:
Based on the information provided within the question it can be said that the sampling method that is being used in this scenario is called Stratified Sampling. This method refers to when a researcher divides a population into various different groups and then chose a predefined number of samples at random from each group. Which is exactly what is happening in this scenario since Carrie divided her day into three parts (groups) and measured her mood twice at random for each part of the day (group).
Answer:
slope is 4 over 7
Step-by-step explanation:
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Answer:
As a reduced fraction: minutes, which is 24 minutes
Step-by-step explanation:
Sam's speed is 1 lawn in 40 minutes. Vanessa's speed is 1 lawn in 60 minutes. If they both work together, the total speed is:
Which means that the total speed would be 5 lawns in 120 minutes. To find the time it would take to mow one lawn at that speed, we need to invert that speed so we get minutes per lawn: