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Alecsey [184]
3 years ago
10

Linear system word problem

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
3 0
Good job, you got the equations! XD

I'll just help you solve

Multiply the 2nd row by 9
<span>9x+9y=117</span>
<span><span><span>9x+27y=207

</span></span></span>Subtract the 2nd row from the 1st row
<span><span><span>−18y=−90
</span></span></span>Divide both sides by <span>−18</span>
<span><span><span>y=<span><span>−90/</span><span>−18
</span></span></span></span>Two negatives make a positive
<span><span>y=<span><span>90/</span><span>18</span></span></span><span>​​</span></span><span>
y = 5

Substitute 5 into an equation
9x+9(5)=11<span>7
</span>9x+45=11<span>7
</span>Subtract <span>45</span> from both sides
<span><span><span>9x=117−45

</span></span></span>9x=7<span>2
</span>Divide both sides by <span><span>9</span></span>
x = ___

Hope this will help​​</span></span>

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andriy [413]

Using the distance formula, the distance between (-3, 4) and (2, -3) is: 8.6 units.

<h3>What is the distance formula?</h3>

Distance formula for calculating the distance between two points on a coordinate plane is given as: d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}.

Let,

(-3, 4) = (x1, y1)

(2, -3) = (x2, y2)

Plug in the values

c = \sqrt{(2 - (-3))^2 + (-3 - 4)^2} \\\\c = \sqrt{74} \\\\

c = 8.6 units.

Therefore, using the distance formula, the distance between (-3, 4) and (2, -3) is: 8.6 units.

Learn more about distance formula on:

brainly.com/question/661229

5 0
2 years ago
Buddy and bubbles are two of Santa’s elves. Buddy can make 15 toys per hour while Bubbles can make 12 toys per hour. Write two e
igor_vitrenko [27]

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Step-by-step explanation:

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15x+12x=y

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5 0
3 years ago
If the coordinates of A are (1, 1) and the midpoint of AB is
yuradex [85]

Answer:

The coordinates of B are (-5, -1).

Step-by-step explanation:

You can make a linear relationship. Since AB is <em>1 unit down and 3 units to the left of</em> A, B must be <em>1 unit down and 3 units to the left of</em> AB.

5 0
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Can someone explain this for me??<br> 4 (c+2) &lt; 4c + 10
faust18 [17]

Answer:

The inequality would be true

Step-by-step explanation:

4(c+2) < 4c + 10

Distribute the 4 on the left

4c + 8 < 4c + 10

Subtract 4c from both sides

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3 years ago
Aubrey can walk 4 1/2 miles in 1 1/2 hours. Find her average speed in miles per hour.
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Time = 11/2 = 5 1/2
Road = 4 1/2 miles
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4 0
3 years ago
Read 2 more answers
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