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worty [1.4K]
3 years ago
6

A pendulum swings through an angle of 20 degrees each second. If the pendulum is 40 inches long how far does the tip move each s

econd? does r= 20 in. or 40 in
Mathematics
1 answer:
Olin [163]3 years ago
3 0

If the pendulum is 40 inches long, its tip moves 13.96” each second. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

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saveliy_v [14]
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5 0
3 years ago
The following table gives results from two groups of students who took a nonproctored test. Use a 0.01 significance level to tes
Nana76 [90]

Answer:

Original claim is \mu_{1} =\mu_{2}

Opposite claim is \mu_{1} \neq \mu_{2}

Null and alternative hypotheses:

H_{0}:\mu_{1} = \mu_{2}

H_{1} : \mu_{1} \neq \mu_{2}

Significance level: 0.01

Test statistic:

We can use TI-84 calculator to find the test statistic and P-value. The steps are as follows:

Press STAT and the scroll right to TESTS

Scroll down to 2-SampTTest... and scroll to stats.

Enter below information.

\bar{x_{1}}=70.29

Sx1=22.09

n_{1} = 30

\bar{x_{2}}=74.26

Sx2=18.15

n_{2} = 32

\mu_{1} \neq \mu_{2}

Pooled: Yes

Calculate.

The output is in the attachment.

Therefore, the test statistic is:

t=-0.78

P-value: 0.4412

Reject or fail to reject: Fail to reject

Final Conclusion: Since the p-value is greater than the significance level, we, therefore, fail to reject the null hypothesis and conclude that the there is sufficient evidence to support the claim that the samples are from populations with the same mean.

6 0
3 years ago
What is the GCF of 100 and 20
alexdok [17]

Answer:

20

Step-by-step explanation:

20 is the GCF or greatest common factor of 20 and 100.

4 0
3 years ago
For the given equation find the value a, b, and c, determine the direction in which the parabola opens and determine the y-inter
Y_Kistochka [10]

Answer: Table A

Step-by-step explanation:

The coefficient of x^2 is 1, the coefficient of x is -6, and the constant is 0. This means that a = 1, b = -6, and c = 0.

  • This eliminates tables B and C.

Now, we need to determine if the graph opens up or down to differentiate between A and B. Since the coefficient of x^2 is positive, the graph opens up.

  • Thus the answer is <u>Table A.</u>
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2 years ago
The 80 eighth graders took a trip to Washington DC. The boys numbered 16 fewer than twice the number of girls. How many of the e
SpyIntel [72]

Answer:

32

Step-by-step explanation:

pls find the attached image

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3 years ago
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