The graph shows the number of paintballs, y, a machine launches in x seconds:

which expression can be used to calculate the rate per second at which the machine launches the balls?

fraction 140 over 5
fraction 5 over 140
fraction 35 over 5
fraction 5 over 35

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

This is about circle theorems. someone asap : (

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.