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Vinvika [58]
3 years ago
13

The sum of the equations -8x - 2y = 54 and 4x + 10y = 10 is an equation in one variable.

Mathematics
1 answer:
allochka39001 [22]3 years ago
5 0
Multiplying first equation by .5:
A) -4x -y = 27   then adding equation B)
B) 4x + 10y = 10
9y = 37
y = <span> <span> <span> 4.1111111111 </span> </span> </span>

x =
-4x - <span> <span> <span> 4.1111111111 </span> </span> </span> = 27
-4x = <span>31.1111111111
x = </span> <span> <span> <span> -7.7777777778 </span> </span> </span>


<span><span> </span> </span>


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Aloiza [94]

Answer:

(2, -2) and (1,-3)

Step-by-step explanation:

The y-intercept means that the coordinate where the line touches the y-axis. In other words, the y value(-4) when x=0. The result is (0, -4). The y coordinate also can be used to fill c variable of y=mx + c

We have 2 coordinates now, (3, -1) and (0, -4), then we can find out the line equation. We need to find the slope (m), the formula will be:

m= y2-y1 / x2-x1=  

m= -4 - (-1) / (0-3)

m= -3/-3= 1

The line equation is:

y= mx + c

y= 1x + (-4)

y= x-4

After you have the equation, you can try to test the point individually to find if any of them fit the equation. You can also draw a line on the graph and see if any point touches the graph.

Red dot is the two point we have, red line is straight line that made from both point, and blue point is the option. As you can see on the graph, the points that touch the line will be (2, -2) and (1,-3)

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3 years ago
Katie practiced the flute for 45 minutes then she ate a snack for 15 minutes next she watched television for 30 minutes until 6:
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Please help fast elementary school all questions
VMariaS [17]

Write the highlighted digit's place and value.

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5. 9,325; hundredth place    6. 8,281; tenth place

Write each number in standard form.

7. 5,000 + 500 + 3; 5,503     8. 2,000 + 300 + 20 + 9; 2,329

9. 4,000 + 600 + 8; 4,608     9. 9,000 + 300 + 70 + 2; 9,372

11. 1,221

We know Sierra has the same numbers in the thousandth and ones place, so keep does numbers: 1,?2?

It also has two more hundreds and 3 fewer ones place: Take the original number; 1,024 (Make sure you keep the numbers) into a equation; (1024+200)-3. First Add as it's in the ( ), then subtract, 1,221

I hope I've helped!

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3 years ago
Suppose that there are two types of tickets to a show: advance and same-day. The combined cost of one advance ticket and one sam
icang [17]
Advance=x

Same.day=y

x+y=35 so x=35-y

40x+30y=1250

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3 years ago
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Step-by-step explanation:

Hi, it seems the question is not complete, therefore I'll create an example tailored to the concept of the question you are asking.

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Think about adding two numbers, such as 7 and 2.

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Notice, the order in which we add does not matter.

2. Associative property, this can be used to regroup addends and the result remains the same: the law states that, if a, b and c are real numbers, then

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Think about three numbers, 4, 3 and 2

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4 + (3 + 2) = 4 + 5 = 9

The results are the same, notice that the regrouping did not change the final result.

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