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Vilka [71]
3 years ago
8

Solve each system using the substitution method. Show all work and steps.

Mathematics
1 answer:
mihalych1998 [28]3 years ago
4 0

Answer:

Solve for the single variable in the one-variable equation.

Step-by-step explanation:

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4x+3y=12
77julia77 [94]

Answer:

B, C, F

Step-by-step explanation:

Given:

\left\{\begin{array}{l}4x+3y=12\\ \\2x+3y=-6\end{array}\right.

Subtract the second equation from the first equation:

(4x+3y)-(2x+3y)=12-(-6)\\ \\4x+3y-2x-3y=12+6\\ \\2x=18\\ \\x=9

Option B "The x coordinate of the solution is 9" is ture

Substitute it into the first equation:

4\cdot 9+3y=12\\ \\36+3y=12\\ \\3y=12-36\\ \\3y=-24\\ \\y=-8

Option F "The y coordinate of the solution is -8" is true.

Point (9,-8) is in the IV quadrant, so option C is true.

8 0
3 years ago
The sum of the angle measures a polygon with n sides is 720. What is n?
Fantom [35]
14 to the second power hope this helps have a nice day
5 0
3 years ago
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Crystal Rollerbladed 150 feet in 15 seconds, while Gavin rollerbladed 150 feet in 10 seconds. Without doing any calculations, wh
mario62 [17]

Answer: Gavin was faster because his time was less than Crystal's.

Step-by-step explanation: They rollerbladed the same distance but Gavin did it in less time.

Hope this helped!

Mark Brainliest if you want!

3 0
3 years ago
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Is the function negative over (-6,-2)
MakcuM [25]
Yes, the function would be negative
5 0
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A pizza has a diameter of 16 inches.
Cloud [144]
I got 50.24 
since 2*3.14*8=50.24
but if you want it rounded to the nearest tenth I guess it would be 50.2
Hope this helps :)
6 0
3 years ago
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