3 years ago

How do I find The diameter of a 1 inch circular object

Mathematics

1 answer:

JulsSmile [24]3 years ago

4 0

If you know the radius of the circle do radius times 2.

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A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found tha

egoroff_w [7]

Answer:

Between 21 years and 75 years

Step-by-step explanation:

Given that a real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 48 years old, with a standard deviation of 9 years.

X the ages of home buyers is N(48, 9)

a) $30\leq x\leq 66\\|x-48|\leq 18\\|x-48|\leq 2\sigma$

Hence using Cheby chev inequality

$P(|x-48|\leq 2\sigma)\geq 1-\frac{1}{2^2} \\=0.75$

b) $25.5\leq x\leq 70.5\\|x-48|\leq 22.5\\|x-48|\leq 1.5\sigma$

$P(|x-48|\leq 1.5\sigma)\geq 1-\frac{1}{1.5^2} \\=0.556$

c) Using normal distribution we have

$P(|x-48|\leq 2\sigma)=0.95$

d) z value is 2.97

Hence x lies between

$(48-9*2.97, 49+9*2.97)\\=(21.27,74.73)$

Between 21 years and 75 years

4 0

3 years ago

Yea thank for the answer

kolbaska11 [484]

Answer:

Step-by-step explanation:

Hello!

10*17 = > 170 cm²

(3,14 * 8)/4 =>6,28cm²

170 + 6,28 => 176,28cm²

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2 years ago

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If 120 L of an acid solution is 75% acid, how much pure acid is there<br> in the mixture?

Sunny_sXe [5.5K]

Answer:

25% or 30L

Step-by-step explanation:

100% is 120L, we know 75% is acid, we need the other 25% to make the 100%. 25% of 120 is 30, so 30 liters is pure acid

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3 years ago

Please I need help on this <br><br> A (X,y) - (x+6,y)<br> B (x,y) - ( x,-y)

kap26 [50]

It would be a reflection across the x acess

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2 years ago

Wendy bought a wallet for $16.99, a key case for $10.95, and a duffle bag for $15.99. Including a sales tax of 5%, what was the

SashulF [63]

The answer is $46.12

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3 years ago

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