Step-by-step explanation:
(x+2y)²=x²+4xy+4y²
...........
Answer:
Mean = 55.2
Step-by-step explanation:
Given data set: 113, 14, 23, 12, 114
To find the <u>mean</u> of a data set, <u>divide</u> the <u>sum</u> of all data values by the total <u>number</u> of data values:

Line them up by the decimal point
Answer:
x=-2.8
Step-by-step explanation:
This answer is right if all the numbers are mixed fractions.
You combine like terms.
-2x+9x
whatever answer that is you then combine the like terms -9+-1 the you just make an expression out of them.