At South London College, 40% of the students are boys (the rest are girls). 60% of the boys and 70% of the girls own a games con
2 answers:
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Answer:
A
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
BC² = 9² + 12² = 81 + 144 = 225 ( take the square root of both sides )
BC = = 15 → A
Answer:
= EC
Step-by-step explanation:
21² + 18² = EC²
441 + 324 = EC²
765 = EC²
= EC
Simplified: = EC
Hope this helps!