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Degger [83]
2 years ago
10

Find solution to the system of linear equations. 5x1 + x2 = 0 , 25x1 + 5x2 = 0

Mathematics
2 answers:
Zigmanuir [339]2 years ago
5 0

Answer:

the system of equation has infinite solution

Step-by-step explanation:

5x_1 + x_2 = 0 , 25x_1 + 5x_2 = 0

Solve the first equation for x_2

Subtract 5x1 on both sides

5x_1 + x_2 = 0

x_2 =-5x_1

Now substitute -5x1 on second equation

25x_1 + 5x_2 = 0

25x_1 + 5(-5x_1)= 0

25x_1-25x_1= 0

0=0

So the system of equation has infinite solution

Eddi Din [679]2 years ago
5 0

Answer:

Step-by-step explanation:

The system of linear equations is expressed as

5x1 + x2 = 0 - - - - - - - - - - - 1

25x1 + 5x2 = 0 - - - - - - - - - - 2

The first step is to eliminate x2 by multiplying equation 1 by 5 and equation 2 by 1. It becomes

25x1 + 5x2 = 0

25x1 + 5x2 = 0

The next step is to subtract equation 2 from equation 1, it becomes

25x1 - 25x1 + 5x2 - 5x2 = 0

0 = 0

The system of equations has an infinite number of solutions. This means that for as many values of x that satisfies equation 1, they will also satisfy equation 2.

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Evaluate the expression. P(9, 3) · P(5, 4)
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Answer:

P(9,3) *P(5,4)

And if we use the permutation formula given by:

nPx = \frac{n!}{(n-x)!}

And replacing we got:

\frac{9!}{6!} \frac{5!}{4!}= 504*5 = 2520

Step-by-step explanation:

For this problem we want to find the following expressionÑ

P(9,3) *P(5,4)

And if we use the permutation formula given by:

nPx = \frac{n!}{(n-x)!}

And replacing we got:

\frac{9!}{6!} \frac{5!}{4!}= 504*5 = 2520

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Quotient refers to division:

(8/v)² ⇒ (8/v)(8/v) = 8*8 / v*v = 64/v²

When you raise a fraction to a power, you multiply the fraction by itself according to the power raised.

Then, do the usual steps of multiplying fractions.
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A researcher is using a repeated-measures design to test for mean differences among four treatment conditions. If the data for t
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Answer:

Step-by-step explanation:

Given that a  researcher is using a repeated-measures design to test for mean differences among four treatment conditions.

The data for this study consist of 10 scores in each treatment.

We have to find the total subjects who participated in the study.

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An insurance company reported that, on average, claims for a certain medical procedure are $942. An independent organization con
kirza4 [7]

Answer:

Step-by-step explanation:

The question is incomplete. The complete question is:

An insurance company reported that, on average claims for a certain medical procedure are $942. an independent organization constructed a 95% confidence interval of ($930, $950) for the average amount claimed for the particular medical procedure. what conclusion best evaluates the truthfulness of the number reported by the insurance company?

a) with 95% certainty, the average claim for this medical procedure is $942.

b) with 95% certainty, the average claim for this medical procedure is not $942.

c) the confidence interval is consistent with an average claim of $942 for this medical procedure

Solution:

Confidence interval is used to express how confident we are that the population parameter that we are looking for is contained in a range of given values. Looking at the given confident interval, the lower limit is $930 and the upper limit is $950. We can see that the population mean, $942 lies within these values. The correct option would be

c) the confidence interval is consistent with an average claim of $942 for this medical procedure

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