Answer:
Step-by-step explanation:
1 yes
2 yes
3 yes
4 yes
Answer:

Step-by-step explanation:
We want to simplify:

We rewrite as:

We split the radical sign to obtain:

Simplify the square root for the perfect squares to get:

Therefore the simplified form is: 
Answer: 2.5 minutes
Explanation: Divide the time by the amount of pages to find the amount of time spent of each page. (30/12=2.5)
Answer:
24
Step-by-step explanation:
6+2×3+4+(27-19)
first the bracket, (27 -19) = 8
and then the multiplication, 2×3 = 6
then the addition, 6+6+4+8 = 24