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arsen [322]
4 years ago
15

Solve the system using elimination

Mathematics
1 answer:
antoniya [11.8K]4 years ago
6 0
Eliminate x's
multiply 2nd equation by -2 ad add to first

2x+3y=9
<u>-2x-10y=-16 +</u>
0x-7y=-7

-7y=-7
divide by -7
y=1

sub back

2x+3y=9
2x+3(1)=9
2x+3=9
minus 3
2x=6
divide 2
x=3


x=3
y=1

(x,y)
(3,1)

D
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X/-2=4, X/3+13=13, Z/2+2=4 plz show ur work and explain how u did it
AVprozaik [17]
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\dfrac{z}{2}+2=4\ \ \ |subtract\ 2\ from\ both\ sides\\\\\dfrac{z}{2}+2-2=4-2\\\\\dfrac{z}{2}=2\ \ \ \ |multiply\ both\ sides\ by\ 2\\\\\not2^1\cdot\dfrac{z}{\not2_1}=2\cdot2\\\\\boxed{z=4}
6 0
3 years ago
The slope of a line is a measure of the steepness<br> True or false
Ganezh [65]

Answer:

The answer is true

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Step-by-step explanation:

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6 0
3 years ago
What is the answer to 3x - 9 equals 3 (x-5)​
viktelen [127]

Answer:

No solution

Step-by-step explanation:

To find the solution to 3x - 9 equals 3(x - 5), we would have to solve for x.

First set the two expressions equal to each other.

3x - 9 = 3(x - 5)

Now we can distribute the 3 on the right side.

3x - 9 = 3x - (3 * 5)

Simplify

3x - 9 = 3x - 15

Now lets try to get x alone on one side of the equality. Subtract 3x from both sides to cancel out of 3x on the right side.

3x - 9 - 3x = 3x - 15 - 3x

-9 = -15

And as you may have realized, -9 does not equal -15.

Why did the x disappear? Why did we end up with -9 = -15 which is clearly a false statement? This is because the the lines y = 3x - 9 and y = 3(x - 15) are parallel. Thus, they will never intersect and the equality 3x - 9 = 3(x - 5) will have no solution.

So there is no solution.

I hope you find my answer to be helpful. Let me know if you have any questions. Happy studying.

4 0
3 years ago
Need help please! Answer ASAP please!!
Sati [7]

Answer:

80 degrees

Step-by-step explanation:

If angle E and angle Y are conguent, angle X and F would be congruent making angle F 80 degrees

7 0
3 years ago
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For which values of x does 2x^2=10x?
Sphinxa [80]

Answer:

x = 0; x = 5

Step-by-step explanation:

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2x² - 10x = 0

2x(x - 5) = 0

x = 0; x = 5

7 0
4 years ago
Read 2 more answers
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