Fill in the blank
1 answer:
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Answer:
x=7 (if your teacher cares it could + or - 7)
Step-by-step explanation:
Okay, since it's a 90 degree triangle you can use the Pythagorean theorem
( a^2 + b^2 = c^2)
Since it's an isosceles triangle the other side is x because it's the same value.
x^2 + x^2= (7 )^2
Add the left side
2x^2= 7^2 + ^2 roots and square roots cancel each other out
So -> 2x^2= 49 x 2 =98
just solve for x.
x^2 = 98/2
x^2= 49
Square root both sides
x= 7
Answer:
B
Step-by-step explanation:
The Pythagoras theorem states that , where
is the hypotenuse and a and b are the adjacent and opposite sides of the hypotenuse. If we made
the subject of the expression, the expression will be re-written as
, which is the correct answer.