-3x-y=-17 4x + 2 y equals 20
Answers
4x + 2y = 20
multiply one part of the equation so that we can be able to use the process of elimination.
(-3x - y = -17)2
4x + 2y = 20
Now we have:
-6x -2y = - 34
4x+2y= 20
------------------------
-2x = -14
Divide -2 on both sides.
-2x = -14
/-2 /-2
x = -7.
=============================================
To solve for y, we just have to substitute the value of x to any of the equation given above, that we feel comfortable with. And I'm going to choose this equation: 4x + 2y = 20
4x + 2y = 20
4(-7) + 2y = 20
-28 + 2y = 20
Add 28 on both sides
-28 + 2y = 20
+28 +28
---------------------
2y = 48
/2 /2
y = 24.
The last thing you would do is to check if the answers is correct.
All you have to do is plug in the values of x and y into both equations and see if they equal to one another.
You may have to do this by yourself :P
Anyways, if you have any questions about this topic, feel free to PM me or any other users interested. Thank you for being part of Brainly! Have a nice day!
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Find the percent of changeif the price of a $10 game ismarked up to $15.
The vertex of the function is
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Answers
Answer:
(-2, -2)
Step-by-step explanation:
Compare the two functions ...
f(x) = -|x +2| -2
f(x) = a·g(x -h) +k
where f(x) is a translation and scaling of function g(x). Here, you have ...
g(x) = |x|
The scale factor is a = -1.
The horizontal shift is h = -2.
The vertical shift is k = -2.
_____
The original vertex at (0, 0) has been shifted by (h, k) to ...
(0, 0) + (h, k) = (0, 0) + (-2, -2) = (-2, -2).
Answer:
(-2,-2)
Step-by-step explanation:
I took a test and got it right
-12x^3/x^3-5x^4
Answers
--> -12x^3/x^3(1-5x)
Since this is a fraction, the x^3 can be cancelled out from the numerator and denominator.
final answer --> -12/(1-5x)
Answers
Answers
15 : 2
Answer:
D
Step-by-step explanation:
Good luck!
Answers
For this case we can write the following linear expressions:
We now subtract both linear expressions:
From here, we must subtract similar terms.
We have then:
Rewriting we have:
That is, we obtain the desired result.
Answer:
2 linear expressions whose difference is 5x-4 is:
A. -26 B.-9 C. -1 D. 10
Answers
The value of g(f(-3)) would be -9 which is the correct answer would be an option (B).
What exactly is a function?
A function is defined as a mathematical phrase that specifies a connection between two variables in algebra.
We have been given the functions below as
f(x) = 3x + 7 and g(x) = 2x - 5
We have to determine the value of g(f(-3))
Substitute the value of f(x) = 3x + 7 in the g(x) = 2x - 5 to get g(f(x))
⇒ g(f(x)) = 2(3x + 7) - 5
Apply the distributive property of multiplication,
⇒ g(f(x)) = 6x + 14 - 5
⇒ g(f(x)) = 6x + 9
Substitute the value of x = -3 in the g(x) = 2x - 5 to get g(f(-3))
⇒ g(f(-3)) = 6(-3) + 9
⇒ g(f(-3)) = -18 + 9
⇒ g(f(-3)) = -9
Therefore, the value of g(f(-3)) would be -9.
Learn more about the functions here:
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