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3 years ago

3x + 7y = 2 6x-5y=4 solve this by elimination method

Mathematics

2 answers:

serious [3.7K]3 years ago

8 0

Answer:

x=2/3, y=0

Step-by-step explanation:

3x + 7y = 2,

6x - 5y = 4

Make the x coefficient the same in both equations.

3x + 7y = 2

(whole thing multiplied by 2)

6x + 14y = 4

Now subtract the equations to eliminate the x variable.

6x + 14y = 4

-(6x - 5y = 4)

19y = 0

Substitute 0 for y in one of the equations.

3x + 7(0) = 2

3x = 2

lbvjy [14]3 years ago

4 0

Answer:

well your equation has 2 equal signs in it but imma take a guess and say the first one is supposed to be a plus sign so

Step-by-step explanation:

here's ur answer

x= −2 /29y+4/29

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zlopas [31]

Answer:

$H0: mu = 8.9 fl oz.\\\\$

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Step-by-step explanation:

Given that A perfume company claims that the mean weight of ther new perfume is at least 8.9 fluid oz

For testing this claim, in Statistics we perform a certain measures called hypothesis testing.

For this first step is to create null and alternate hypothesis.

Normally null hypothesis would have some statistic = something

Here we want to test the mean weight of perfume

Hence null hypothesis would be

H0: mu = 8.9 fl oz.

Alternate hypothesis would be opposite of this claim

i.e.

Ha: mu ≠8.9 fluid oz

Hence answer is

$H0: mu = 8.9 fl oz.\\\\$

$Ha: mu ≠8.9 fluid oz$

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