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Masja [62]
2 years ago
9

1x + 1y= 2 , -3x + 4y= 15using solving of elimination

Mathematics
1 answer:
swat322 years ago
7 0
<span><span>1) 1x + 1y = 2
</span>
<span><span>x + 1 × y = <span>2

</span></span><span>x + y = <span>2

2) </span></span><span> -3x + 4y = 15

</span><span>- 3 х = 1 5 - 4 <span>у

</span></span><span><span>х <span>= 15-4y/3

<span>I hope helped ^-^</span>
</span></span>
</span>
<span>

</span></span></span>
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(20 points) A statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s
Nimfa-mama [501]

Answer:

The P-value is 0.0234.

Step-by-step explanation:

We are given that a statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s = 20.

Let = population mean.

So, Null Hypothesis, : = 100 {means that the population mean is equal to 100}

Alternate Hypothesis, : > 100 {means that the population mean is more than 100}

The test statistics that will be used here is One-sample t-test statistics because we're yet to know about the population standard deviation;

T.S. = ~

where, = sample mean = 98

s = sample standard deviation = 20

n = sample size = 400

So, the test statistics = ~

= -2

The value of t-test statistics is -2.

Now, the P-value of the test statistics is given by;

P( < -2) = 0.0234 {using the t-table}

8 0
3 years ago
The question is write the name of each term in the blank<br> 938<br> +347<br> 722<br> =2007
galben [10]

Answer:

+

Step-by-step explanation:

938 + 347 = 1285

2007 - 1285 = 722

CHECK:

938 + 347 + 722 = 2007

8 0
3 years ago
F(x) = -3x+17 and g(x) = x^2 -6 find g(5)-f(5)
aniked [119]

Answer:

For the given functions, the value of   g(5)-f(5)  = 17

Step-by-step explanation:

Here, the given functions are:

f(x) =  -3x + 17

g(x) = x ^2 - 6

So, f(5)  = -3(5) + 17

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So, f(5) = 2 and g(5) = 19

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Answer:

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Step-by-step explanation:

8 0
3 years ago
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Jobisdone [24]

Answer:

H0 : flavor and serving size are independent

H1: Flavor and serving size are not independent

Step-by-step explanation:

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The Null hypothesis will be the opposite of the alternative, establish that both variables are independent.

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