2 years ago

Solve th simultaneous equations 3x + y = 17 2x +y = 12

Mathematics

1 answer:

nydimaria [60]2 years ago

6 0

Answer:

I can't I'm blind and Def

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Describe what happens when two intersecting lines form a linear pair of congruent angles. Explain how you can get eight congruen

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The angles diagonally opposite each other are congruent while those adjacent to each other add up to 180 degrees. You can get eight congruent angles with a transversal if the two lines are parallel, because each angle would be 90.

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3 years ago

Minnesota Public Radio wants to duplicate a survey conducted in 2016 that found that 65% of adults living in Minnesota felt that

vesna_86 [32]

Answer:

The number of people needed is $n =684$

Step-by-step explanation:

From the question we are told that

The population proportion is $p = 0.65$

The margin of error is $E = 0.03$

From the question we are told the confidence level is 90% , hence the level of significance is

$\alpha = (100 - 90 ) \%$

=> $\alpha = 0.10$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.645$

Generally the sample size is mathematically represented as

$n =[ \frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * p(1-p)$

=> $n =[ \frac{1.645 }{0.03} ]^2 * 0.65(1-0.65)$

=> $n =684$

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3 years ago

Solve equation <br> 0.3 :4=9:y

elixir [45]

Answer:

You should use photomath, it would be more easier for u. Oh, and by the watñy Y=12

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6.743=BC
this is the answer

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