Mr. brown shares with the class that 70% of the students got an a on the english vocabulary quiz.

1. if mr. brown has 100 students, create a model to show how many of the students received an a on the quiz.

2. what fraction of the students received an a on the quiz?

3. how could we represent this amount using a decimal?

4. how are the decimal, the fraction and the percent all related?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry