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sergejj [24]
2 years ago
14

3x + 4y = 5 X- 3y = -7 Solve by substitution

Mathematics
1 answer:
weeeeeb [17]2 years ago
7 0
X = 3y - 7
3x + 4y = 5

3(3y - 7) + 4y = 5
9y - 21 + 4y = 5

13y - 21 = 5

13y = 26

y = 2

x - 3(2)= -7

x - 6 = -7

x = -1

(-1, 2)
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Please help me in this question
weqwewe [10]
Question is: how many 84s will fit in 5376? Let's think about some easy multiples:

84 * 100 = 8400, so it's too big
84 * 10 = 840, so it might work

84 | 5376 | 10
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84 | 4536 | 10
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84 | 3696 | 10
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84 | 2856 | 10
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84 | 336

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So there's no remainder. Now we add all the partial quotients to get the final result:

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</u>
It's correct, I checked it with calculator. I just hope you'll be able to read something from that, it's quite difficult to do partial dividing with no pencil and paper :)
3 0
3 years ago
Thе іmagе оf (-2, 5) is (1, 1).
dem82 [27]

Answer:

  (6, -2)

Step-by-step explanation:

To get to x=1 from x=-2, you must add 3 to the x-coordinate. Only one answer choice has an x-coordinate that is 3 more than that of the given point:

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The image point is (6, -2).

_____

<em>Check</em>

To get from a y-coordinate of 5 to an image point y-coordinate of 1, you must subtract 4. If you subtract 4 from the y-coordinate of (3, 2), you get 2-4 = -2, the y-coordinate in the chosen answer above.

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Step-by-step explanation:

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3 years ago
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gulaghasi [49]

Answer:

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Step-by-step explanation:

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3 years ago
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