1. you receive two packages of black/white sand mixes. package a is one-third black sand and two-thirds white sand. package b is nine-tenths black sand and one-tenth white sand. how much of each package is needed to create a mixture that is sixty percent black sand and forty percent white sand?

Can i get some on 18,20,& 22? or one of them

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?