Answer:
The mean increases and the median changes to 4.
Step-by-step explanation:
To find the mean. You need to add all of the numbers together then divide by how many numbers there are. The median is found by the middle number.
If i'm understanding this question correctly, i believe that it's 2.
2*9=6*3
Answer:
14
Step-by-step explanation:
(a+b)^2
(a+b)(a+b)
FOIL
a^2 + ab+ab + b^2
Combine like terms
a^2 +2ab + b^2
Rearranging
a^2+b^2 +2ab
We know a^2+b^2 = 4 and ab= 5
4 + 2(5)
4+10
14
So the number of pencils bought can be represented by an equation:
, where n is the number of notebooks bought. Since Helen bought 5 notebooks, simply plug 5 into n:
. So Helen bought 12 pencils.
Step-by-step explanation:
2+2+2+2+2÷2×2-2-2-2-2=2
