3 years ago

PLSS HELP WILL GIVE BRAINLIEST

Mathematics

1 answer:

Andru [333]3 years ago

4 0

Answer:

12 is the answer

Step-by-step explanation:

¾ × x = 9

x = 12

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A researcher draws a population of 40 adults from a city and administers an IQ test (which is known to have a population mean of

ra1l [238]

Answer: $(103.3515,\ 112.6485)$

Step-by-step explanation:

According to the given information, we have

n= 40

$\sigma=15\\\\\overline{x}=108$

Critical z-value for 95% confidence = $z_{\alpha/2}=1.96$

Confidence interval :

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=108\pm (1.96)\dfrac{15}{\sqrt{40}}\\\\\approx108\pm4.6485\\\\= (108-4.6485,\ 108+4.6485)\\\\=(103.3515,\ 112.6485)$

Hence, the 95 percent confidence interval for this result : $(103.3515,\ 112.6485)$

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3 years ago

WILL GIVE BRAINLIEST The table below shows the values of y for different values of x:

Kobotan [32]

Answer:

y = 8x

Step-by-step explanation:

Formula : K = y/x

Equation Formula: y=kx

Hence,

8 = 8/1

8 = 16/2

8 = 24/3

Therefore, y =8x

[RevyBreeze]

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2 years ago

(69 points!) Some1 please solve. (69 points!)

MAVERICK [17]

Answer:

for the second questio it is certainly The last choice D

Step-by-step explanation:

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3 years ago

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Vladimir79 [104]

(x-6) (x-2) is our factored answer

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The equation of a parabola is y=1/8x2−4x+41 .

Dafna1 [17]

Y=7............................................................................................................................................................

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3 years ago

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