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docker41 [41]
4 years ago
7

The item below is based on the following scenario.

Mathematics
1 answer:
Helen [10]4 years ago
5 0

Answer:

φ = 0.34

Step-by-step explanation:

Given:

total number of observations = N = 100

chi-square test for independence χ2 = (4, N = 100) = 11.73

To find:

phi coefficient φ

Solution:

phi coefficient  φ is computed as:

φ = √( χ2 / n )

   = √ (11.73 / 100 )

   = √0.1173

φ = 0.3425

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Solve the equation by completing the square. Round to the nearest hundredth if necessary? X^2+3x=24
Genrish500 [490]
X^2+3x=24, halve the linear coefficient, square it, and add it to both sides

In this case (3/2)^2=2.25

x^2+3x+2.25=26.25 now the left side is a perfect square...

(x+1.5)^2=26.25  take the square root of both sides

x+1.5=±√26.25  subtract 1.5 from both sides

x=-1.5±√26.25

x=-1.5-√26.25 and -1.5+√26.25

x≈ -6.62 and 3.62
6 0
3 years ago
A - 57 7/9<br> B- 11 2/3<br> C- 48 2/9<br> D-28 2/3
Cerrena [4.2K]

Answer:

i would say B is the answer

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The cost (in dollars) of a custom made sweatshirt is represented by 3.5n +29.99, where n is the number of different colors in th
juin [17]

Answer:

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Step-by-step explanation:

The cost is given for <em>1 sweatshirt</em>. To find the cost of 15 sweatshirts, we need to multiply the expression by 15. Let's do this:

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This is the expression that represents the cost of 15 sweatshirts.

8 0
3 years ago
Evaluate ab - 0.56 when a = 1 and b = 5.
Contact [7]

Answer:

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8 0
3 years ago
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Shtirlitz [24]

Answer:

Hi there!

An equation for this is:

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Step-by-step explanation:

The <u>slope</u> is always in front of the "x"! The y intercept is always added to the slope!

Hope this helps

4 0
3 years ago
Read 2 more answers
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