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Leona [35]
3 years ago
5

How do you determine whether to use substitution or elimination. give an example of a system that you would solve using each met

hod?
Mathematics
1 answer:
nadezda [96]3 years ago
3 0
You determine which one to use by seeing which one would be easier

elimination: 5x + 7y = 2
                  -5x + 6y = 6

substitution: y = 9x + 5
                  2y = 7x + 2
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4 0
3 years ago
2(-6(4)+29)-4(4)=-6 whats the answer plz hurry brainliest answer
Keith_Richards [23]

Answer:

the answer is 1. have a nice day!!!

4 0
2 years ago
Geometry help? How would I solve this?
Firlakuza [10]
\bf \textit{sum of interior angles in a regular polygon}
\\\\\\
n\theta=180(n-2)\qquad 
\begin{cases}
n=\textit{number of sides}\\
\theta=\textit{angle in degrees}
\end{cases}
\\\\\\
\textit{notice, your two polygons, are just two regular octagons}\\
\textit{OCTAgons, thus OCTA = 8, 8 sides, thus}
\\\\\\
n\theta=180(n-2)\qquad n=8\implies 8\theta=180(8-2)
\\\\\\
\theta=\cfrac{180\cdot 6}{8}

so... that's how much an internal angle is
now, subtract that from 180 and you get the angle outside, in the picture

subtract that outside angle twice from 180, and you get angle "2"
because angle 2 is in the same triangle as those two outside angles, and all internal angles in a triangle is 180, thus 180 - (those two angles) is angle "2"

8 0
3 years ago
Someone help me with this lol
AlekseyPX

Answer:

784 sorry my math was wrong lol

explanation:

multiply the numbers of each triangle sepratley.

then subtract them to get 784

8 0
3 years ago
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Algebra 2 high school math ​
Masteriza [31]

Answer is written down below

7 0
3 years ago
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