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3 years ago

How many solutions does the system of equations below have?

Mathematics

2 answers:

BaLLatris [955]3 years ago

6 0

Answer:

C: none

Step-by-step explanation:

Here we have two separate functions named 'y.' Eliminate 'y' temporarily by equating these functions together:

x + 2 = y = x - 1

Subtracting x from both sides, we get:

0 + 2 = y = 0 - 1, or

2 = -1

This is never true, so C is the correct answer: NO solutions.

An easier way in which to do this problem is to visualize the graphs of

y = x + 2 and y = x - 1. The graphs are parallel straight lines; they never intersect, and therefore we can conclude "no solution."

galben [10]3 years ago

4 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

The confidence interval for the population mean is given by :-

$\mu\ \pm z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size = 463

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Now, the 90% confidence interval for the population mean will be :-

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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