Answer:
measure of angle 2 and angle 3 are both 97
Step-by-step explanation:
angle 2 and angle 3 are vertical angles
Answer:
Options A and B
i.e., A. 4(3
) and B. 
Step-by-step explanation:
Like radicals are similar to like terms.
For example,
x, 2x, -10x,
, 7.3x are like terms.
are some more examples of like terms.
Similarly, like radicals are:
etc.
Hence, from the given options, like radicals to
are:
A.
and B. 
The answer should be 390=60s, assuming s is the number of shelves he would need.
By the way, if you want the answer using this formula:
390=60s
390/60=s
6.5=s
s=6.5