Which of the following is the expansion of (2m - n)^7?
a)128m^7+448m^6n+672m^5n^2+560m^4n^ 3+280m^3n^4+84m^2n^5+14mn^6+n^7
b) 128m^7+14m^6n+42m^5n^2+70m^4n^3+70m ^3n^4+42m^2n^5+14mn^6+n^7
c) m^7+7m^6n+21m^5n^2+35m^4n^3+35m^3n^ 4+21m^2n^5+7mn^6+n^7
d) 128m^7-384m^6n+480m^5n^2-320m^4n^3+ 160m^3n^4-60m^2n^5+12mn^6-n^7
e) 128m^7-448m^6n+672m^5n^2-560m^4n^3+ 280m^3n^4-84m^2n^5+14mn^6-n^7

which expression represents the approximate length of bc?

step-by-step explanation:

chase is right because he already been to the swings and he know how far it will be to get there

step-by-step explanation:

kjgfcvbjkl

step-by-step explanation:

sdfghjkl; vbnm,

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.