b
こんにちは
mmmmmmmmnnnnnnnnnnnnnnnnnnnnnnn
Answer:
7
Step-by-step explanation:
By Basic proportionality theorem:

According to the euclidean triangle theorem
9 = z² / 13
z² = 9 x 13 = 117
z = 3 √13
Answer:

Step-by-step explanation:
Since this is mathematics, significant figures are not necessary. Thus, we can just take 0.58 and delete the 0s. Now,
.