Answer:
+ =
a and b are legs, c is the hypotenuse
81 + 121 =
202 = ( square root each side
14.2126704036 = c
c = 14.2
35=10+5+5+p
35=20+p
35-20=p
p=15
12x18
Step-by-step explanation:
The second option.
3x + 6 = 21.
If x = 5, plug it in.
3 · 5 + 6 = 21
15 + 6 = 21
Hope this helps,
Davinia.
Answer:6