Answer:
+ 25
Step-by-step explanation:
b² + 10b
using the method of completing the square
add ( half the coefficient of the b- term)²
b² + 2(5)b + 25
= (b + 5)² ← a perfect square
Answer:

Step-by-step explanation:
A parallelogram has opposite parallel sides and it is a quadrilateral.
Answer:
121670
Step-by-step explanation:
The number of packages can be defined with the function:
P(t) = P(t-1)*1.15 where t = the years and 1.15 represents the 15% increase.
Packages during 2018: P(2018) = 80000
Packages during 2019: P(2019) = P(2018)*1.15 = 92000
Packages during 2020: P(2020) = P(2019)*1.15 = 105800
Packages during 2021: P(2021) = P(2020)*1.15 = 121670
First, add the 3 and the 1 to get 4. Then, add the 8/9 to the 2/9 getting 10/9. Then simplify it to 1 1/9. Then add the 4 to get 5 1/9
b
---------------------
|. |
h |. | h
|. |
---------------------
b
Okay so I did my best to make a rectangle above. If you think about substitution, it pretty much means to replace. Like when your teacher leaves for the day so a sun comes in to replace them for the day. Since we're using 14 and 3 to replace b and h, your equation goes from b+b+h+h to find the perimeter, to 14+14+3+3.