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guapka [62]
3 years ago
11

Find the distance between the points (-10, 5) and (-8, -3). A) 2 17 B) 8 C) 59 D) 55

Mathematics
2 answers:
rjkz [21]3 years ago
8 0
Distance formula : sqrt ((x2 - x1)^2 + (y2 - y1)^2
(-10,5)....x1 = -10 and y1 = 5
(-8,-3)....x2 = -8 and y2 = -3
now sub
d = sqrt ((-8 - (-10)^2 + (-3 - 5)^2)
d = sqrt ((-8 + 10)^2 + (-8^2)
d = sqrt (2^2) + (-8^2)
d = sqrt (4 + 64)
d = sqrt 68
d = 8.25 <====
Serjik [45]3 years ago
5 0
You can use the distance formula.

The distance, d, between points (x1, y1) and (x2, y2) is

d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

d = \sqrt{(-8 - (-10))^2 + (-3 - 5)^2}

d = \sqrt{2^2 + (-8)^2}

d = \sqrt{4 + 64}

d = \sqrt{68}

d = 8.24...

Answer:

B) 8
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Step-by-step explanation:

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3 years ago
A cube has a volume of 1000 cubic feet. What us the edge length of the cube?
Ainat [17]
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3 years ago
Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is 13.4 years with a s
Aliun [14]

Answer : 0.0129

Step-by-step explanation:

Given : Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is \mu=13.4 years and standard deviation is \sigma=1.7 years.

Sample size : n=40

Let X be the random variable that represents the age of fleets.

We assume that the ages of the fleets of the 10 largest U.S. commercial passenger carriers are normally distributed.

For z-score,

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x=14

z=\dfrac{14-13.4}{\dfrac{1.7}{\sqrt{40}}}\approx2.23

By using the standard normal distribution table , the probability that the average age of these 40 airplanes is at least 14 years old will be :-

P(x\geq 14)=P(z\geq2.23)\\\\=1-P(z

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6 0
3 years ago
9. Using a twenty sided number cube, what is the probability that you will roll an even number or
IceJOKER [234]

Answer:

0.85

Step-by-step explanation:

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3 0
2 years ago
Point C is the midpoint of a segment AB . What are the coordinates of point B, if: A(–1, 3), C( 1, –1)
a_sh-v [17]

Answer:

(3,-5)

Step-by-step explanation:

To find the x coordinate of the  midpoint, add the  x coordinates together and divide by 2

The x coordinate is

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( -1+x)/2 = 1

Multiply by 2

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Add 1

x =2+1

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To find the y coordinate of the midpoint, add the  y coordinates together and divide by 2

The y coordinate is

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(3+y)/2 = -1

Multiply by 2

3+y = -2

Subtract 3

y = -2-3

y =-5

The other endpoint is (3,-5)

5 0
3 years ago
Read 2 more answers
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