180 divided into two parts, one part will be 3 times the other part. what is the larger part 3n+n = 180 solve for n

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

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