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aniked [119]
3 years ago
7

If l || m, classify the marked angle pair and give their relationship, then solve for X.

Mathematics
1 answer:
pickupchik [31]3 years ago
6 0
Alternate exterior angles(AEA).
Given their relationship the angles are congruent.
8x-71=5x+7
3x-71=7
3x=78
X=26
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Theo had a balance of -4 in his savings account. After making a deposit , he has $25 in his account . What is the overall change
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Theos initial balance in his savings account = -$4
Final balance after making a deposit = $25
So, the overall change to his account = $ 29
6 0
3 years ago
Review the proof of de Moivre’s theorem.
RideAnS [48]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
An ornithologist has 4 bird feeders at separate locations. She wonders if birds are equally likely to visit each of the feeders.
Marianna [84]

Answer:

the x² test statistic 13.71

Option a) 13.71 is the correct answer.

Step-by-step explanation:

Given the data in the question;

Feeder                     1      2      3       4

Observed visits; o_i  60   90   92    58

data sample = 300

Expected e_i = 300 / 4 = 75

the x² test statistic = ?

X^2_{stat = ∑[ (o_i - e_i)²/e_i]

X^2_{stat = [ (60 - 75)² / 75 ] + [ (90 - 75)² / 75 ] + [ (92 - 75)² / 75 ] + [ (58 - 75)² / 75 ]

X^2_{stat = [ 3 ] + [ 3 ] + [ 3.8533 ] + [ 3.8533 ]

X^2_{stat = 13.7066 ≈ 13.71

Therefore, the x² test statistic 13.71

Option a) 13.71 is the correct answer.

7 0
3 years ago
Elena’s bus runs every 20 minutes. If she arrives at her bus stop at a random time, what is the probability that she will have t
Bond [772]
We try to represent the data in segments from 0 to 20.
<span>The length of the line segment along the number line from 0 to 5 is 5 - 0 = 5 units. The length of the line segment along the number line from 20 to 5 is 20 - 5 = 15 units. If you were to randomly throw a dart on this number line, then the probability of landing in the shaded region is 15/20 = 3/4 or 75%</span>
6 0
3 years ago
Read 2 more answers
Three randomly selected households are surveyed. The numbers of people in the households are 3​, 5​, and 10. Assume that samples
nalin [4]

Answer:

there is no anwser

Step-by-step explanation:

im lazy

4 0
3 years ago
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