9514 1404 393
Answer:
B, D
Step-by-step explanation:
The quadratic expands to ...
(2n -1)² = (2n)² +2(2n)(-1) +(-1)² = 4n² -4n +1
The coefficients can be factored out of the sum, so ...
∑(4n²) = 4∑n² for example
The sum of 60 ones is 60:
So, the sum can be written as ...
_____
It appears that the key to choosing the correct answers is paying attention to signs.
Answer:
4
if there are 360 degrees worth of pie then we just divide 360 by 90 getting 4
Step-by-step explanation:
Answer:
The cost of the item was $31.68
Step-by-step explanation:
Things to understand for this type of question!
• Converting
• Percentage
————————————————————
We are trying to find out 12% or $264
Step 1. Use part/whole = part/whole
12% is part of $264 in total
12%/100% = ?/$264
Step 2. Multiply $264 by 12% and divided by 100
12%/100% = $31.68/$264
••••••••••••••••••••••••••••••••••••••••••••••••••
Therefore, the shop owner loss $31.68
Answer:
12x
Step-by-step explanation:
if each cake served 12 people, that would mean that each cake would have 12 servings, so you multiply 12 (X) so however many cakes there were, you know how many
Use a calculator yo like this is easy af. Just multiply
