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LekaFEV [45]
3 years ago
9

Which point is a solution to the system of equations? y = 3x +4 y =+2

Mathematics
2 answers:
Papessa [141]3 years ago
7 0
(-2,3,2) is the answrr
Andru [333]3 years ago
3 0
(-2/3, 2)


Solve for the first variable in one of the equations, then substitute the result into the other equation.
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Hi anyone indian here??​
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I'm not lol

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4x + 4y = -8<br> -22 – 2y = 4
Natalka [10]

Answer:

1) 4x + 4y = -8

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y=-2-x

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2 years ago
suppose that a company claims that its coffee cans contain 8.2 ounces of coffee, on average. you take many large samples, and fi
vovangra [49]

Answer:

Accept the claim that mean = 8.2oz.

Step-by-step explanation:

Given that a company claims that its coffee cans contain 8.2 ounces of coffee, on average.

To check this, normally large samples are drawn and sample mean is calculated

Then hypotheses created as

H0: Mean = 8.2

Ha: Mean not equals 8.2

The std deviation of sample is found out and then 95% confidence interval is calculated.

If the sample mean falls within 95% confidence interval, then we are 95% confident that for large samples, the sample mean would fall within this interval. Also the claim can be accepted.

Hence conclusion is accept null hypothesis that mean = 8.2 oz.

4 0
3 years ago
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An absentminded professor does not remember which of his 12 keys will open his ocedoor. Suppose he tries them at random and with
kipiarov [429]

Answer: 0.0052

Step-by-step explanation:

Total number of times experiment was performed (n)= 12

Probability of the event (that one key out of a total of 12 opens the door) = 1/12 = 0.083

Hence, p = 0.83

q = 1 - p = 11/12 = 0.917

x = 3

Since the experiment was performed n number of times, a binomial probability distribution can defined the experiment.

P(x=r) = nCr ×p^r × q^n-r

P(x=3) = 12C3 × (0.083)⁴ × (0.917)^8

P(x=3) = 220 × (0.083)⁴ × (0.917)^8

P(x=3) = 0.0052

8 0
3 years ago
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