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mylen [45]
3 years ago
12

The roots of the function f(x) = x2 – 2x – 3 are shown. What is the missing number?

Mathematics
2 answers:
Arada [10]3 years ago
8 0

Answer:

The answer is 3


yulyashka [42]3 years ago
7 0
If you would like to find the roots of the function f(x) = x^2 - 2 * x - 3, you can calculate this using the following steps:

<span>f(x) = x^2 - 2 * x - 3 = (x - 3) * (x + 1)
</span>1. x = - 1
2. x = 3

The missing number would be 3.
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sdas [7]

Answer:

B is the answer because yes

6 0
2 years ago
Suppose that we are testing a coin to see if it is fair, so our hypotheses are: H0: p = 0.5 vs Ha: p ≠ 0.5. In each of (a) and (
aleksley [76]

Answer:

H_0: p = 0.5\\H_a: p \neq 0.5

a. We get 56 heads out of 100 tosses.

We will use one sample proportion test  

x = 56

n = 100

\widehat{p}=\frac{x}{n}

\widehat{p}=\frac{56}{100}

\widehat{p}=0.56

Formula of test statistic =\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

                                       =\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{100}}}

                                       =1.2

refer the z table for p value

p value = 0.8849

a.  We get 560 heads out of 1000 tosses.

We will use one sample proportion test  

x = 560

n = 1000

\widehat{p}=\frac{x}{n}

\widehat{p}=\frac{560}{1000}

\widehat{p}=0.56

Formula of test statistic =\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

                                       =\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{1000}}}

                                       =3.794

refer the z table for p value

p value = .000148

p value of part B is less than Part A because part B have 10 times the number the tosses.

6 0
3 years ago
Help please WORTH 15 POINTS!
lord [1]

Answer:

Step-by-step explanation:

I think it is 22

6 0
3 years ago
Read 2 more answers
12.8° to the nearest degree
Ivenika [448]

12.8=13°

Hope this helps!

Thanks!

-Charlie

3 0
3 years ago
Read 2 more answers
2n – 32 = 10(n - 8) what is the answer
sasho [114]

Answer:

n = 6

Step-by-step explanation:

2n - 32 = 10n - 80

2n - 10n = -80 + 32

-8n = -48

-48/-8 = 6

7 0
3 years ago
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