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Stells [14]
3 years ago
13

This was the only question I didnt understand. An explanation would be nice.

Mathematics
1 answer:
faust18 [17]3 years ago
4 0

Answer:

B

Step-by-step explanation:

ac =5x

cb=7x

(5x×5x)+ (5 +7)^2 = 7x^2

25x^2+144=49x^2

x=kök 6

ac =5kok 6

(5kok6)×12÷2= 30 kök 6

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