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3 years ago

If you can help me please help me because I really want to understand this topic thank you

Mathematics

1 answer:

ludmilkaskok [199]3 years ago

5 0

Answer:

Step-by-step explanation:

add 3 to both sides to get x on its own: x>5

you find 5 on the number line, and then because x is greater it could be: 6, 7, 8, 9, 10, etc.

because of this the line points left.

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The second quartile of a data set is 4.2. Which statement about the data values is true?

Setler [38]

The second quartile is also the median. which is 50% of the data. So 1/2 of the data lies below it, and 1/2 of the data lies above it.
the correct answer would be A. the data value of 2.5 will lie below the second quartile.

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3 years ago

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Solving systems of equations with substitution: y= 2x-4 y= -x+5 help please!

Furkat [3]

y= 2x-4
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3 years ago

Given: ABC is a right triangle with right angle C. AB=14 centimeters and m∠A=33∘ .

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Please simplify this equation: 16x²+16y²+96x-40y=315

gavmur [86]

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3 years ago

A recent poll of 700 people who work indoors found that 278 smoke. if the researchers want to be 98% confident of their results

Mice21 [21]

Answer:

We are given:

$\hat{p}=\frac{278}{700}=0.397$

$z_{\frac{0.02}{2}}=2.33$ is the critical value at 0.02 significance level

$E=0.035$ is the margin of error

Therefore, the required sample size is:

$n=\hat{p}(1-\hat{p}) \left(\frac{z_{\frac{0.02}{2}} }{E} \right )^{2}$

$=0.397(1-0.397) \left( \frac{2.33}{0.035} \right)^2$

$=0.239391 \times 4431.755102$

$=1060.922286 \approx 1061$

Therefore, the required sample size n = 1061

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3 years ago