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Mashutka [201]
2 years ago
7

Write a system of linear inequalities so the points (1, 2) and (4, −3) are solutions of the system, but the point (−2, 8) is not

a solution of the system. PLEASE SOMEONE HELP AND SOLVE IT AS A SYSTEM OF LINEAR EQUATIONS
Mathematics
2 answers:
dalvyx [7]2 years ago
7 0
I can’t see it where is it it’s blurry
Travka [436]2 years ago
4 0

Answer:

<u>The sample system is given below:</u>

  • y < 5
  • y > x - 8

<em>see the attached for the graph</em>

The points (1, 2) and (4, -3) are in the intersected region but the point (-2, 8) is outside

  • <em>The easy way to get the inequalities to plot the points and add lines to divide the regions where desired point are inside and not required point is outside. </em>
  • <em>I put y = 5 and y = x - 8 lines and shaded the region below y = 5 line and above the other line.</em>

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2 years ago
An article estimates, with 90% confidence, that the proportion of elementary school teachers who are female is 82%. The article
GREYUIT [131]

Answer:   (80% , 85%)

Step-by-step explanation:

We know that, confidence interval for population proportion is given by :-

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, where p = sample proportion , E = Margin of error.

Given : Proportion of elementary school teachers who are female = 82%.

The article also states the maximum error of their estimate = 3%.

Then, the 90% confidence interval for the proportion of elementary school teachers who are female will be :

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Hence, the resulting 90% confidence interval for the proportion of elementary school teachers who are female = (80% , 85%)

5 0
2 years ago
Find a ⋅ b. a = 8i + 6j, b = 4i + 5j
frutty [35]
You could rewrite this as double brackets, as you are multiplying together two sets of two terms. It would then look like:
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8i × 4i = 32i²
8i × 5j = 40ij
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To get your final answer, you then just need to add together all of the like terms, and get 32i² + 30j² + 64ij

I hope this helps!
7 0
2 years ago
Read 2 more answers
on a piece of paper, graph this system of inequalities. Then determine which region contains the solution to the system. a pictu
slava [35]

C. Region D

Step-by-step explanation:

Just plug the equations into desmos the calculator will graph it and show you with colors where the solution is.

4 0
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Therefore, the correct answer is option 1. Hope this answers the question. Have a nice day.
8 0
2 years ago
Read 2 more answers
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