Determine the length of BC . ANSWERS: A) 12.25 units B) 24.71 units C) 19.00 units D) 5.57 units
1 answer:
Answer:
A) 12.25 units
Step-by-step explanation:
From Pythagorean theorem:
Defining:
The system of equations is:
x + y = 625 (eq. 1)
36 + z = y (eq. 2)
361 + z = x (eq. 3)
Replacing equation 3 into 1:
361 + z + y = 625
From equation 2:
z = y - 36
Replacing it into equation 1:
361 + y - 36 + y = 625
2y = 625 + 36 - 361
y = 300/2
y = 150
Finally:
BC = √y
BC = √150
BC = 12.25 units
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300times, because 6xs10^5 is equal to 600000 and 2xs10^3 is 2000, and if you divide you would get 300