51. I checked the comments but I still didn't understand it, sorry :/
54.
(43+45+47+49)=184
They are all odd and they are in consecutive order (one after another)
Answer:
The first equation should be multiplied by 9 and the second equation by −4
Step-by-step explanation:
Given the simultaneous equation
First Equation: 5x − 4y = 28
Second equation: 3x - 9y = 30
In order to eliminate y, we must make the coefficient of x in both expression to be equal.
To do that the first equation should be multiplied by 9 (negative value of the coefficient of y in equation 2)and the second equation by -4( (coefficient of y in equation 1)
The median drawn from a vertex of a triangle intersects the opposing side at the mid point.
The three medians of a triangle intersect in a point named centroid, but that is another story.
Answer:
30%
Step-by-step explanation:
multiply both sides of the first set of data in the table by ten to get 100 as x and 70 as y, which means that it was marked down 30 dollars, or 30%
Put x = -2 and y = 5 to the expression.
![\left[3\cdot(-2)^3(5)^{-2}\right]^2=\left[3(-8)\cdot\dfrac{1}{5^2}\right]^2=\left(-24\cdot\dfrac{1}{25}\right)^2=\left(-\dfrac{24}{25}\right)^2\\\\=\dfrac{24^2}{25^2}=\dfrac{576}{625}](https://tex.z-dn.net/?f=%5Cleft%5B3%5Ccdot%28-2%29%5E3%285%29%5E%7B-2%7D%5Cright%5D%5E2%3D%5Cleft%5B3%28-8%29%5Ccdot%5Cdfrac%7B1%7D%7B5%5E2%7D%5Cright%5D%5E2%3D%5Cleft%28-24%5Ccdot%5Cdfrac%7B1%7D%7B25%7D%5Cright%29%5E2%3D%5Cleft%28-%5Cdfrac%7B24%7D%7B25%7D%5Cright%29%5E2%5C%5C%5C%5C%3D%5Cdfrac%7B24%5E2%7D%7B25%5E2%7D%3D%5Cdfrac%7B576%7D%7B625%7D)
explanation
