Diane has 386 coins in her coin collection. there are a total of 112 nickels and 61 dimes in her collection the remaining coins are pennies. round each number to the nearest 10 to estimate how many pennies diane has.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

Explain how you can show five less than a number using an algebraic expression