Does soil filled with nitrogen increase the weight of worms compared with soil without nitrogen? The weight of 20 randomly selected worms is acquired, 10 in soil with nitrogen and 10 in soil without nitrogen. The mean weight of worms in soil with nitrogen was 36.6 micrograms whereas the mean weight of worms in soil without nitrogen was 27.3 micrograms. A researcher randomized the data over 100 trials, and the difference of means for each trial is shown in the dot plot below.

To prove "p is equal to q" using an indirect proof, what would your starting assumption be?

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.