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coldgirl [10]
3 years ago
13

Which geometric figures have a measurable quantity? A. line B. angle C. point D. lin

Mathematics
1 answer:
Jlenok [28]3 years ago
8 0

Answer:

b

Step-by-step explanation:

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2x + 3y = 23<br> -1(2x + y = 13
vivado [14]

Answer:

2x +3y= 5xy

-1(2x+y= 2xy+-1 = -3xy

3 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
How much tax would you pay on an item at 5% tax rate costing $75? (Round to the nearest cent)
Llana [10]

Answer:

3.75

Step-by-step explanation:

6 0
3 years ago
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Which linear equation has no solutions?
Andru [333]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
What is the slope of line which goes through the points (-2,-1) and (2,3)?
Nat2105 [25]

Answer:

1

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(3-(-1))/(2-(-2))

m=(3+1)/(2+2)

m=4/4

m=1

6 0
3 years ago
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