Answer:
You should use photomath, it would be more easier for u. Oh, and by the watñy Y=12
O, C , B , A because the important will disguise the sisomatic amplitude
In a 45 - 45 - 90 right triangle, the hypotenuse is √2 · legs = hypotenuse, so legs=
and to rationalize the denominator all we have to do is multiply the numerator and denominator by √2. 
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Total questions are 30.
70% of 30
=30(70/100)
=21
So, the questions can be wrong are 30-21.
=9 questions..
Thanks!
