90 degrees
Hope this helps
When x=9 the expression is undefined.
That is because any number over 0 is undefined, including 0/0.
√129 is less than
.

Let us first solve for √129.
➝
➝
Now,
➝
➝
Clearly,
➵
➵
Hence, √129 is less than
.

12a^-4 * b^-3
a= 2 and b = -1
Can you put 2 where it says a and -1 where it says b
Answer: 1/4
Step-by-step explanation: 20 is a fourth of 80
Please mark brainleist if I got it right. I really need it to level up