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Bumek [7]
4 years ago
5

13) -3x - 4y = 8-4x - 3y=6​

Mathematics
1 answer:
Dvinal [7]4 years ago
6 0

Answer:

x = 0, y = -2

Step-by-step explanation:

-3x - 4y = 8  (1)

-4x - 3y=6​ (2)

Multiply (1) by -4 and (2) by -3, we have:

12x + 16y = - 32  (3)

12x + 9y= -18​ (4)

Subtract (4) from (3), we have:

(12x + 16y) - (12x + 9y) = - 32  - (-18)

<=> 7y = - 14

=> y = - 2

Replace y with - 2 in (3), we have x = 0

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Answer:

x=-11/8

Step-by-step explanation:

x-(5/8)=-2

Give the -2 a common denominator to make it easy

x-(5/8)= -16/8

Add the 5/8 to the -16/8

x= -11/8

5 0
3 years ago
7/18 times 3 in simplest form
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Answer:

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Step-by-step explanation:

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3 years ago
Sahil got 28 questions right on the math test. Angelina got 7 more wrong answers than Sahil. There where 40 questions on the tes
Svetradugi [14.3K]

Answer:

19 wrong answers.

Step-by-step explanation:

Given:

Sahil got 28 questions right.

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Question asked:

How many answers did Angelina get wrong on the math test ?

Solution:

Total questions on the test = 40

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Number of wrong answers, Sahil got = 40 - 28 = 12

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Number of wrong answers, Sahil got = 12

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4 years ago
HELP !!! Use the elimination method to solve the system of equations.
Dafna1 [17]

Answer:

C. (5, -3)

Step-by-step explanation:

4x + 3y = 11

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4x + 3y = 11

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---------------------add

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5 - y = 8

y = 5 - 8

y = -3

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3 years ago
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