Subtract 11xy^2- from 9xy^22 to get -2xy^2
7!/2!
Step-by-step explanation:
nCr=(nr)=n!r!(n−r)! 7C2=(72)=7!2!(7−2)!=7!2!⋅5!=50402⋅120=5040240=21.
E and F and B are your correct answers, 40/60 equals 2/3 and F is a automatic choice answer, divide the n/d for letter E By 2 and you get 2/3. B is also correct if you divide the n/d by 6, you get 2/3. Enjoy the lesson and happy studying:)
$815
14(500*0.045) + 500
= 14(22.5) + 500
= 315 + 500
= 815
