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Alex777 [14]
3 years ago
8

Solve the simultaneous equation 2x - 5y = 9 3x + 4y = 2

Mathematics
1 answer:
lianna [129]3 years ago
8 0

Answer:

x = 2, y = -1.

Step-by-step explanation:

2x - 5y = 9

3x + 4y = 2

Multiply first equation by -3 and the second by 2:

-6x + 15y = -27

6x + 8y = 4            Adding the 2 equations:

23y = -23

y = -1.

Now substitute this value for y in the first equation:

2x - 5(-1) = 9

2x = 9 +5(-1)

2x = 9 - 5

2x = 4

x = 2.

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Answer:

  D, F

Step-by-step explanation:

The mnemonic SOH CAH TOA can help you with this. It reminds you ...

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8 0
3 years ago
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Jobisdone [24]

Answer:

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3 years ago
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3 years ago
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Alenkinab [10]
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7 0
3 years ago
A card is drawn from a 52 card deck any fair coin is flipped what is the probability of getting Jack and hits
Black_prince [1.1K]

Answer:

1/26

Step-by-step explanation:

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