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Minchanka [31]
3 years ago
14

X+y=3 x-3y= -29 Solve the system by using the elimination method

Mathematics
1 answer:
Sindrei [870]3 years ago
3 0

Answer:

x= 16

y= -13

Step-by-step explanation:

x+y=3

x-3y=-29

Eliminate x and subtract the equations

2y=-26

y= -13

Plug in y for first or second equation

x=16

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Elena-2011 [213]
It is stated that their are closed circles on -4 and 3. This means, both -4 and 3 are also included in the interval.

The following regions are included in the range:

a) -4 
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c) 3
d) Numbers greater than 3

So, the number line represents:
x greater than or equal to -4 and x less than or greater to 3.

Therefore, the first option gives the correct combined inequality. 
6 0
4 years ago
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The average daily volume of a computer stock in 2011 was μ=35.1 million​ shares, according to a reliable source. A stock analyst
alexandr1967 [171]

Answer:

The 95% confidence interval is ( 27.126 , 34.674)

Step-by-step explanation:

Given

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Mean  

\bar{x} - t * \frac{s}{\sqrt{n} } < \mu < \bar{x} + t * \frac{s}{\sqrt{n} }

Substituting the given values we get -

\30.9 - 2.023 * \frac{11.8}{\sqrt{40} } < \mu < \30.9 + 2.023 * \frac{11.8}{\sqrt{40} }\\27.126 < \mu < 34.674

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( 27.126 , 34.674)

4 0
3 years ago
Given f(x) and g(x) = f(x) + k, use the graph to determine the value of k.
Evgesh-ka [11]

Answer:

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Step-by-step explanation:

The value of k is the amount by which the function f(x) is translated upward to give the function g(x). We can compare y-intercepts to see that the y-intercept of g(x) is 5 -2 = 3 units more than the y-intercept of f(x). This means ...

  g(x) = f(x) +3

Comparing to ...

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7 0
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Answer:

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118 + 1 \frac{4}{7}

119 + \frac{4}{7}

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3 0
4 years ago
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