4 years ago

Help!!!!!?!!!!!!!?!!?!!!!

Mathematics

2 answers:

Andreas93 [3]4 years ago

7 0

Answer:

yellow

Step-by-step explanation:

miss Akunina [59]4 years ago

5 0

It would be yellowwww

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Find the value of a if x=2 y= -1 z=-3 solve: a= y²-x z/5

krek1111 [17]

2 1/2 or 2.2 I think.

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3 years ago

35 POINT QUESTION!! WILL GIVE BRAINLIEST!! Is x + 2 a factor of P(x) = 2x^3 + 5x^2 + 5x + 6?

Sphinxa [80]

Answer:

Yes

Step-by-step explanation:

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3 years ago

Do main of ln(2x+3/×-1)

lozanna [386]

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4 years ago

(CO 4) In a sample of 8 high school students, they spent an average of 24.8 hours each week doing sports with a sample standard

AveGali [126]

Answer:

(22.12, 27.48)

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.95=0.05$

Sample size : n= 8 , which is a small sample (n<30), so we use t-test.

Critical values using t-distribution: $t_{n-1,\alpha/2}=t_{7,0.025}=2.365$

Sample mean : $\overline{x}=24.8\text{ hours}$

Standard deviation : $\sigma=3.2\text{ hours}$

The confidence interval for population means is given by :-

$\overline{x}\pm t_{n-1,\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

i.e. $24.8\pm(2.365)\dfrac{3.2}{\sqrt{8}}$

$24.8\pm2.67569206001\\\\\approx24.8\pm2.68\\\\=(24.8-2.68, 24.8+2.68)=(22.12, 27.48)$

Hence, the 95% confidence interval, assuming the times are normally distributed.= (22.12, 27.48)

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3 years ago

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iren2701 [21]

Answer:

yes it is..............

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