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3 years ago

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Mathematics

1 answer:

Vinvika [58]3 years ago

5 0

Answer:

Step-by-step explanation:

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PLEASE HELP!! It takes Sheila 36 minutes to edit a commercial. How many commercials can

Anna007 [38]

Answer:

she can edit 4 commericals in 144 minutes.

Step-by-step explanation:

144 divided by 36 is 4

7 0

3 years ago

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What is the product? 6 [ 4 -2 1 7 3 0]

saul85 [17]

Answer:

-130356

Step-by-step explanation:

solve for bracket first

4-21730 = -21726 then multiply by 6 =

-130356

8 0

4 years ago

The question is.......

Hunter-Best [27]

multiply the 2 numbers together than divide by 2

7 1/2 = 15/2

12 2/3 = 38/3

15/2 * 38/3 = 570/6 =95

95/2=47.5 square feet

5 0

3 years ago

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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

Question 22 of 25

mote1985 [20]

Answer

Step-by-step explanation:

Is the answer !

5 0

3 years ago

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