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dusya [7]
2 years ago
7

Solve the system of equations by elimintion express the solution as and order paired

Mathematics
1 answer:
tester [92]2 years ago
3 0
First convert the first equation to combine like terms. Then set your equations up as an addition problem. You want at least one of your variables (y) to be of opposite values so the will cancel out to leave you with just one variable (x). Plug in 1/3 for the x into one of the equations to solve for y. Then write as an ordered pair.

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Pleaseeeeee helppppp!!!!!
Paul [167]
P=6\cdot\dfrac{1}{2}ah=3ah\\
a=3 \text{ ft}\\
h=2.6\text{ ft}\\\\
P=3\cdot3\cdot2.6=23.4 \text{ ft}^2 \Rightarrow B
6 0
3 years ago
A dozen bran muffins cost $9.48. Which equation represents the cost, y, of x muffins
swat32

Answer:

12y+9.48x=0

Step-by-step explanation:

Note dozen means 12 in mathematics

So 12 muffins cost $9.48

X muffins cost $y

So let's cross multiply

12×y=9.48×x

12y=9.48x

Substrate 9.48x from both sides

12y-9.48x=0

So the final equation is 12y-9.48x=0

6 0
3 years ago
Y = (x + 9)(x-4)<br><br>Now we need to multiply our binomials​
MA_775_DIABLO [31]

Answer:

x^{2}+5x-36

Step-by-step explanation:

To multiply binomials there are 2 ways. F.O.I.L., or the box method.

I will use the box method, and I hope it helps you!

After looking at the picture, this is not the answer quite yet.

x^{2}+9x-4x\\-36

Subtract 4x from 9x.

9x-4x=5x

So, the answer will be x^{2}+5x-36

8 0
3 years ago
Read 2 more answers
When was the midpoint formula discovered?
photoshop1234 [79]

Answer:

(\frac{x1+x2}{2}, \frac{y1+y2}{2})

Step-by-step explanation:

3 0
3 years ago
4x+2y=20 and 3x-y=10<br><br> Which coordinate solves both equations.
Amiraneli [1.4K]

4x + 2y = 20

3x - y = 10

Multiplying second equation by 2.

6x - 2y = 20

Adding to the first,

10x = 40

x = 4

y = 3x - 10 = 3(4) - 10 = 2

Answer: (4, 2)

Check:

4(4) + 2(2) = 16+4 = 20, good

3(4) - 2 = 12 - 2 = 10, good

7 0
3 years ago
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