Answer:
Correct option is
B
(1−3a−3b)(1+a+b)
1−2a−2b−3(a+b)
2
=−3(a+b)
2
−2(a+b)+1
=−3(a+b)
2
−3(a+b)+(a+b)+1
=−3(a+b)((a+b)+1)+((a+b)+1)
=((a+b)+1)(1−3(a+b))
=(a+b+1)(1−3a−3b)
1.2a+1.15b=(680+118)=798 and a+b=680,
Solving for a from the second equation we get: a=680-b
Using 680-b for a in the first equation we get:
1.2(680-b)+1.15b=798
816-1.2b+1.15b=798
816-0.05b=798
-0.05b=-18
b=360, and since a=680-b
a=320
So the a team was supposed to produce 320 parts and the b team was supposed to produce 360 parts...
check...
320*1.2+360*1.15=680+118
384+414=798
798=798
Its point c because you just make the 3 negative and c happens to be right on top of it
Answer: I think 2 4/39
Step-by-step explanation: not sure sorry if i get it wrong
The answer for the question is C
