Hi there!
8:30 to 12:45 is four hours and 15 minutes. You could easily count this but if you're having trouble you could also use a clock. :P
Hope this helps!
No idea man
Explanation: I don’t man I just wang pints
The surface area of a shape is the amount of space on the shape
When the dimensions are quadrupled, the new surface area would be 16 times the initial surface area
<h3>How to determine the surface area</h3>
The surface area of a rectangular prism is:

When quadrupled, we have:

Factor out 16

Substitute 

The above means that:
The new surface area would be 16 times the initial surface area
Read more about surface areas at:
brainly.com/question/24571594
Answer:
1. b+15=27
2. 4*X=36
3. y-9=12
4. k/7=21
Step-by-step explanation:
sum means addition and product means to multiply and difference means subtraction and divided means to divide :)
Answer: 10+30=40 :)
Step-by-step explanation: