I need help with my math! It is Rules of exponents. Can anyone help me?
1 answer:
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Answer:
x ≈ 15.9
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
x² + 6² = 17²
x² + 36 = 289 ( subtract 36 from both sides )
x² = 253 ( take the square root of both sides )
x = ≈ 15.9 ( to the nearest tenth )
Option B:
Solution:
In the given figure .
If two triangles are similar, then their corresponding sides and angles are equal.
By CPCTC, in ,
– – – – (1)
– – – – (2)
– – – – (3)
– – – – (4)
– – – – (5)
– – – – (6)
Option A:
By CPCTC proved in equation (2) .
Therefore . Option A is false.
Option B:
By CPCTC proved in equation (1) .
Therefore Option B is true.
Option C:
By CPCTC proved in equation (4) .
Therefore . Option C is false.
Option D:
By CPCTC proved in equation (5) .
Therefore . Option D is false.
Hence Option B is the correct answer.