Answer:
25
Step-by-step explanation:
this is a right triangle so you can use the Pythagorean Theorem where the sum of the square of each leg is equal to the square of the hypotenuse
missing length is a leg and we can assign the variable 'a'
the other leg can be 'c' and the hypotenuse can be 'c'
a² + 35² = 43²
a² + 1225 = 1849
subtract 1225 from each side to get:
a² = 624
take the square root of each side to get:
a = [tex]\sqrt{624}[/tex]
[tex]\sqrt{624}[/tex] is equal to 25 by the nearest tenth
