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3 years ago

What is another way to name Plane P?

1 answer:

6 0

You can name Plane P, many different ways,
Assuming you are asking this out of a textbook staring at a figure of a Parallelogram, their are probably points inside that shape and the way you would name it would be naming using any three points in the plane that are NOT on the same line in any order. <span />

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Here is data on the percentage of 200 hotels in each of the three large cities across the world on whether minibar charges are c

zheka24 [161]

Answer:

Degree of freedom = 2

Expected frequency = 80%

Critical value, = 5.991

χ² statistic = 3.5

Step-by-step explanation:

Given the data :

Hong Kong New York Paris

Yes 86% 76% 78%

No 14% 24% 22%

The degree of freedom for the Chisquare statistic is given as :

(no of rows - 1) * (number of columns - 1)

Number of rows = 2

Number of columns = 3

. Degree of freedom = (2-1) * (3-1) = 1*2 = 2

Expected frequency = (Row total * column total) / grand total

The expected frequency of Hong Kong / Yes cell :

Row total = (86+76+78) = 240

Column total = (86+14) = 100

Grand total, N = (14+24+22)+240 = 300

Expected frequency = (240*100)/300 = 80%

The critical value :

At α - level = 0.05 ; df = 2

Critical value = 5.991

χ² = Σ(observed - Expected)² / Expected

The expected values :

80 80 80

20 20 20

Hence,

χ² = Σ(86-80)²/80 + (76-80)²/80 + (78-80)²/80 + (14-20)²/20 + (24-20)²/20 + (22-20)²/20

χ² statistic = 3.5

5 0

3 years ago

the sum of the reciprocals of two consecutive even integers is 9/40. this can be represented by the equation shown 1/x + 1/(x+2)

Ivanshal [37]

Answer:

8, 10

Step-by-step explanation:

Multiplying the equation by the product of the denominators, we have ...

40(x+2) +40x = 9x(x+2)

80x +80 = 9x^2 +18x . . . . eliminate parentheses

9x^2 -62x -80 = 0 . . . . . . put in standard form

9x^2 -72x +10x -80 = 0 . . . prepare to factor by grouping

9x(x -8) +10(x -8) = 0 . . . . . factor pairs of terms

(9x +10)(x -8) = 0

Solutions are ...

x = -10/9 and x = 8

The integers are 8 and 10.

_____

<em>Comment on the attachment</em>

I find a graphing calculator to be a nice tool for solving these. It finds zeros easily, so writing the equation so it equals zero is a useful first step.

5 0

3 years ago

A squirrel can run at a maximum speed of 24 miles per hour. At this rate, how many seconds will it take the squirrel to run 12 m

Anastaziya [24]

Answer:

6 secs

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

the perimeter of a rectangle is 56 m. if the width were doubled and the length were increased by 8 m, then the perimeter would b

Natasha2012 [34]

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Define x and y:
----------------------------------------------------------------
Let the length be x.
Let the width be y.

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Formula:
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Perimeter = 2(Length + Width)

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Construct equations and solve for x and y:
----------------------------------------------------------------
2x + 2y = 56 ---------------------- (1)
2(x+8) + 4y = 82 -----------------------(2)

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From equation 1:
----------------------------------------------------------------
2x + 2y = 56
x + y = 28
x = 28 - y

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From equation 2:
----------------------------------------------------------------
2(x+8) + 4y = 82
2x + 16 + 4y = 82
2x + 4y = 66
x + 2y = 33

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Substitute x = 28 - y into equation 2:
----------------------------------------------------------------
x + 2y = 33
(28 - y) + 2y = 33
28 - y + 2y = 33
y = 5

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Substitute y = 5 into equation 1:
----------------------------------------------------------------
x = 28 - y
x = 28 - 5
x = 23

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Find Length and Width
----------------------------------------------------------------
Length = x = 23 m
Width = y = 5m

----------------------------------------------------------------
Answer: Length = 23m and Width = 5m
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3 0

3 years ago

Help for brainiest asap pleaseeeeee

Komok [63]

Answer:

angle A = 45°

angle B = 110°

angle C = 25°

5 0

2 years ago

Read 2 more answers