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RoseWind [281]
2 years ago
7

Sophomore, junior, and senior students at a high school will be surveyed regarding a potential increase in the extracurricular s

tudent activities fee. There are three possible responses to the survey question...agree with the increase, do not agree with the increase, no opinion. A chi-square test will be conducted to determine whether the response to this question is independent of the class in which the student is a member. How many degrees of freedom should the chi-square test have? A9 B6 C4 D2 E1
Mathematics
1 answer:
vitfil [10]2 years ago
5 0

Answer: C) 4

Step-by-step explanation:

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Which number(s) below belong to the solution set of the equation? Check all
Stells [14]

Answer:

11

Step-by-step explanation:

198 ÷ 18 = 11

x = 11

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2 years ago
What is 21 inches to 9 feet in simplest form
Olenka [21]
2.41667, you can also find a converter online. 
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3 years ago
Kylie explained that (–4x + 9)2 will result in a difference of squares because (–4x + 9)2 = (–4x)2 + (9)2 = 16x2 + 81. Which sta
Serjik [45]
The correct product should have been:
<span>(–4x + 9)2 = </span>(-4x)2 + 2(-4x)(9) + 9^2 = 16x6 - 72x +81
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So, the answer is:
C = Kylie did not understand that this is a perfect square trinomial, and she did not determine the product correctly.


8 0
3 years ago
Read 2 more answers
From the diagram below, if the sides AD = 3 and DC = 27, and BD = X + 3, find x.
Colt1911 [192]

Given:

• AD = 3

,

• DC = 27

,

• BD = x + 3

Let's solve for x.

To solve for x, apply the altitude formula:

\frac{AD}{BD}=\frac{BD}{DC}

Where BD is the altitude.

Cross multiply:

BD^2=AD*DC

Plug in the values and solve for x:

\begin{gathered} (x+3)^2=3*27 \\  \\ (x+3)^2=81 \end{gathered}

Take the square root of both sides:

\begin{gathered} \sqrt{(x+3)^2}=\sqrt{81} \\  \\ x+3=9 \\  \\ \text{ Subtract 3 from both sides:} \\ x+3-3=9-3 \\  \\ x=6 \end{gathered}

Therefore, the value of x is 6 .

ANSWER:

d. 6

4 0
1 year ago
Pat is a 23 year old man. He earns a taxable income of $70,000.00, and the effective
Jobisdone [24]

Answer:

$12,594.71

Step-by-step explanation:

i did the test

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3 years ago
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