Answer: 56.54866776... rounded to the nearest tenth
56.55
Step-by-step explanation:
The formula for circumference is
or 
Answer:





Step-by-step explanation:
Solving (1):


Required
Calculate Area




Solving (2):
Given

Required: Calculate Area




Solving (3):


Required: Calculate Length



Factorize the numerator



Divide by x + 3

Solving (4):


Required: Determine the average speed
This is calculated as:


Factorize the numerator


Solving (5):
Multiply
by sum of
and 
First, calculate the sum:



Then, the product


Answer:
Dog C barks the most times per minute.
Step-by-step explanation:
Dog A barks 10 times per minute. 20/2 = 10
Dog B barks 9 times per minute. 45/5 = 9
Dog C barks 11 times per minute. 66/6 = 11
11 is greater than 10 and 9, therefore, Dog C barks the most.
Distribute the 3 to the parentheses. Q=3r+3/r
Next multiply both sides by r to get rid of the division sign.
Qr=3r+3
Subtract 3r on both sides and you get Qr-3r=3
Since both numbers have an r in it, we can factor out the r
r(Q-3)=3
Then we divide Q-3 on both sides
r=3 / (Q-3)
Answer:
4 packages
Step-by-step explanation:
450 can be divided by 100 4 whole times, the extra cards cannot be added into a package