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TiliK225 [7]
3 years ago
8

In the diagram below P is circumscribed about quadrilateral ABCD? What is the value of X? PLS HELP

Mathematics
2 answers:
suter [353]3 years ago
7 0

Answer:

x=80\°

Step-by-step explanation:

we know that

If the quadrilateral is inscribed in a circle then the sum of its opposite angles is  equal to 180\°

In this problem

m∠B and m∠D are opposite angles

so

m∠B + m∠D=180\°

we have

m∠B=100\°

solve for m∠D

m∠B=180\°-100\°=80\°

x=80\°

Airida [17]3 years ago
6 0
Check the picture below.

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Subtraction (must show work) 1. d - 27 = 45 2. h - 114 = 28
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Answer:

Step-by-step explanation:

1.

d - 27 = 45

add 27

d = 72

2.

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add 114

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3.

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4.

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2 years ago
What is the value of n in the equation 8n + 9 = -n
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Answer:

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Step-by-step explanation:

Data given and notation    

\bar X=18.81 represent the average lateral recumbency for the sample    

s=8.4 represent the sample standard deviation    

n=75 sample size    

\mu_o =20 represent the value that we want to test    

\alpha represent the significance level for the hypothesis test.    

t would represent the statistic (variable of interest)    

p_v represent the p value for the test (variable of interest)    

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t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".    

Calculate the statistic    

We can replace in formula (1) the info given like this:    

t=\frac{18.81-20}{\frac{8.4}{\sqrt{75}}}=-1.227

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p_v =P(t_{74}    

Conclusion    

If we compare the p value and a significance level for example \alpha=0.1 we see that p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, so we can conclude that the true mean it's not significantly less than 20 min.

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