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3 years ago

3x^2-4x-6/x-3 is equivalent to

Mathematics

1 answer:

pashok25 [27]3 years ago

5 0

Answer:

-x^2(4x^4-3x+9/ x-3

Step-by-step explanation:

toy answer ^^^

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2 years ago

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3 years ago

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3 years ago

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PLZ SIMPLIFY <br> (x-7)(x^2 - 8x - 19)

shtirl [24]

Answer:

Step-by-step explanation:

(x-7)(x^2 - 8x - 19)

=(x+−7)(x^2+−8x+−19)

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3 years ago

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A student wants to survey the sophomore class of 200 students about whether the school should require uniforms. A

Fittoniya [83]

Answer: C

Step-by-step explanation:

<u>Given:</u>

Sample size (n) = 50

x = 12

$\widehat{\mathbf{p}}=\frac{\mathbf{x}}{n}=\frac{12}{50}=0.24$

Confidence level = 90%

α = 1 − 0.90 = 0.10

α/2 = 0.05

$\text { Critical value }\left(z_{c}\right)=z_{\frac{\alpha}{2}}=z_{0.05}=1.6449$

(from standard normal table)

90% Confidence interval is,

$\begin{aligned}&\text { Confidence interval }=\widehat{\mathbf{p}} \pm z_{c} \times \sqrt{\frac{\hat{\mathbf{p}}(1-\hat{\mathbf{p}})}{n}} \\&\text { C. I }=0.24 \pm 1.6449 \times \sqrt{\frac{0.24(1-0.24)}{50}} \\&\text { C. I }=0.24 \pm 1.65 \times \sqrt{\frac{0.24(1-0.24)}{50}}\left\end{aligned}$

Therefore, 90% confidence interval for the true proportion of sophomores who favour the adoption of uniforms is C

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3 years ago