ANSWER
a. d+4
b. 4d+16
EXPLANATION
The area of the square coaster is represented by:

We split the middle term to obtain,

We factor by grouping to get,


Since area of a square is l² , it means the side length of the square is

b) The perimeter of a square is given by

We substitute the length in terms of d, to obtain;

Or

Answer:
79 cents per song
Step-by-step explanation:
you divide 1580 by 20 and get 79 and then re-add the decimal place in to get .79
Answer:
23
Step-by-step explanation:
2y=46
y=46/2
y=23
hope this helps!!
Sure , What Do Youu Need Help With ?
Answer:
- Inscribed angle is half of the intercepted arc.
- Central angle is the same size as the intercepted arc.
<u>As per above two statements we have:</u>
and