Answer:
Option D
Step-by-step explanation:
(8x^2-9y^2-4x) +(x^2-3y^2-7x)
8x^2+x^2-9y^2-3y^2-4x-7x
9x^2-12y^2-11x
The lower square root would be 4.2
Answer:
a) 21+30+10+4+19+31+7+17+4=148
148 divided by 10= 14.8
b) 148+17=165
165 divided by 11= 15
Step-by-step explanation:
In math, the mean is the average of a set of numbers. To find the mean of a data set, add up all of the numbers in the set, and then divide that total by the amount of numbers in the set.
I did it for you in the picture!
