Answer:
I want to say the answer is b
Step-by-step explanation:
I guess that's all you can do
to find a and b you need more information
b=-a -> a (x-3)-a (x-2)=3
a [x-3-(x-2)]=3
a (x-3-x+2)=3
a*(-1)=3
a=3:(-1)
a=-3
b=-a=-(-3)=3
Answer:
123/4
Step-by-step explanation:
3 3/4=15/4
Reciprocal of 15/4=-4/15
8 1/5 / 3 3/4
=41/5 / 15/4
= 123/4
I didn’t get the first part of the question that well but this is the answer for the question
The mean is the average of the numbers, so if x = all 11 numbers added together, then you have the equation:
x / 11 = 7, so x = 77 (this is all of the numbers added together)
if the number 13 is removed, the equation becomes:
(77 - 13) / 10 = M (M is the new mean)
so the new mean is 6.4