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tester [92]
3 years ago
8

Which of the following is a validation of concurrency between two polygons?

Mathematics
1 answer:
tatiyna3 years ago
3 0
Concurrent validity is a type of evidence that can be gathered to defend the use of a test for predicting other outcomes. It is a parameter used in sociology, psychology, and other psychometric or behavioral sciences. Concurrent validity is demonstrated when a test correlates well with a measure that has previously been validated. The two measures may be for the same construct, but more often used for different, but presumably related, constructs.
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Acellus
mylen [45]

Answer: 90degrees

Step-by-step explanation: The question was asked in degree. So the answer should be in degree. Which leaves us with no option than 90degrees.

8 0
3 years ago
A triangle has sides 12cm, 9cm and 15cm. Is the triangle right-angled? Justify your answer
marusya05 [52]

Answer:

yes

Step-by-step explanation:

Yes this triangle is right angled and can be justified using the Pythagorean theorem. The theorem states that: a^{2} +b^{2} = c^{2}. Substitute using the given values:

(9^2)+(12^2)=15^2

81 + 144 = 255

255 = 255.

It satisfies the theorem therefore it is a right angle triangle.

3 0
3 years ago
Otto had two days to paint 9 paintings. He painted 5 1\5 yesterday. How many paintings does Otto need to paint today?
enot [183]

Answer:

He needs to paint 3 4/5 today.

Step-by-step explanation:

9 - 5 1/5 = 3 4/5

Otto will need to paint 3 4/5 today.

4 0
3 years ago
Read 2 more answers
Which of the following is an equivalent representation of 5^-4 ?
Afina-wow [57]

Answer:

D

Step-by-step explanation:

5 0
3 years ago
Complete this statement:<br> 16a2x2 + 20a²x + 12a2 - 4a?(
yaroslaw [1]

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