Question

I’m so confused I need help please!!

Answer 1

Answer:

5. 9 8. $2\sqrt{10}$

Step-by-step explanation:

a²+b²=c²

so for #5 12²+b²=15²

144+b²=225 (subtract 144 from both sides)

b²=81

b=9

For #8

9²+b²=11²

81+b²=121 (subtract 81 from both sides)

b²=40

b=$\sqrt{40}$

$\sqrt{40}$=

$2\sqrt{10}$

Answer 2

What they said !!!!!!!^