Using pythagorean theorem find a, and b, where a is twice of b and the hypotonuse is 5√5
2 answers:
The pythagoras theorem is

where C is the hypotenuse.
Since a is twice of b,
a = 2b
The hypotenuse is C = 5√5.
Let's put this into the pythagoras equation




since we know a=2b, then a = 2(5)
a=10
Measure of Hypotaneous = 5√5
And it's already given that b = 2a
By using pythagoras theorem:
a²+ b² = (5√5)²
Let's substitute for b as 2a in above equation we'll get:
a² + (2a)² = (5√5)²
a² + 4a² = 125
5a² = 125
a² = 25
a = √25 = 5
Therefore,
a= 5
and
b = 2a = 2(5) = 10.
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Answer:
AB = 3
Step-by-step explanation:
AB = AD
AB² + 4² = (AB + 2)²
AB² + 16 = AB² + 4AB + 4
combine like terms:
4AB = 12
AB = 3
Plug the 5 into the x in the equation 2x. it should be 2(5) which equals 10.