5x + 5x - x + 8y - 4y =
(5x + 5x - <span>x) + (8y - 4y) =
(9x) + (4y) =
9x + 4y
</span>
<span>
</span>
(5x + 5x - <span>x) + (8y - 4y) =
(9x) + (4y) =
9x + 4y
</span>
</span>
What is (-x^5y^7)^2 divides by (2x^2y^3)^4
1 answer:
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A suitable graphing caculator gives the result
X = 15 25/39
Y = 7 6/13
Z = 4 4/39
_____
If you want to solve this by hand, you can add 3 times the first equation to the second to get
... 5X -2Z = 70
and 5 times the first equation to the third to get
... 8X -11Z = 80
Then Cramer's Rule tells you the solutions for X and Z are
... X = (-160+770)/(-16+55) = 610/39
... Z = (560 -400)/39 = 160/39
From there, you can substitute into any of the equations to find Y. The first one might be most convenient.
... Y = 19 -X +Z = 19 -(15 25/39) +(4 4/39) = 8 -21/39 = 7 6/13
A dot plot is similar to histogram wherein they show the frequency of data. In this kind of plot, instead of bars, dots are stacked on their corresponding bin. The bins here are the number of pets, while the dots are the students. So, the 2 dots above number 3 signifies that, there are two students with three pets. The answer is A.
