Answer:
When is the vertex of a parabola the minimum point?
Answer: when the parabola has a vertical axis and opens up.
When is it the maximum point?
Answer: when the parabola has a vertical axis and opens down.
(ii) the number of such books that have a mass
of 20 kg.
Answer:
The mass of 150 books = 41.7kg
The number of books that have mass 20kg = 72 books
Step-by-step explanation:
(I) Number of identical books = 108
Mass of books = 30 kg
Mass of 150 books = ?
Let the mass of 150 books = x kg
To find the mass of 150 books we will use ratio and proportion:
108 books: 30kg = 150 books: x kg
You can also write it like this because ratio can be written in division:
108/30 = 150/x
By cross multiplication:
108x = 150*30
108 x= 4500
Divide both sides by 108
108 x/108 = 4500/108
x= 41.7
Thus the mass of 150 books = 41.7kg
( ii ) The number of books that have a mass of 20 kg = ?
Let assume that the number of books of mass 20 kg = y books
We will again use ratio and proportion method.
108 books: 30kg = y: 20kg
We can write it as:
108/30 = y/20
By cross multiplication:
108 *20 = 30y
2160= 30y
Divide both the terms by 30
2160/30 = 30y/30
72 = y
Therefore the number of books that have mass 20kg = 72 books ....
Answer:
A
Step-by-step explanation:
Call the credit card company’s customer service department to update your contact information.
B.
Change your online bank account password so it can’t be easily guessed.
C.
Keep all financial records, Social Security cards, and ID cards in a safe place.
D.
Review your credit report to make sure there are no unauthorized open accounts.
E.
Shred papers that contain any personal or medical information.
"Review your credit report to make sure there are no unauthorized open accounts" action one can take to determine whether his or her identity has been stolen.
Answer: Option D
Explanation:
Fraudsters can use personal details to rob your bank account or run credit card bills, get insurance medical treatment or get a driver's license on your behalf. Anyone with a Social Security number is a possible victim of identity theft. Specialists believe that early identity theft awareness will considerably reduce the harm caused by theft.
The warning signs involve: a strange charge on your credit card bill, credit score is going up or down, a new account one didn’t open on their credit card, Inaccurate medical records etc. The actions which are needed to take immediately to check whether one got victimized or not are: Check your credit card statements and bank account, Run a credit report and Monitor your finances closely.
Answer:
Review your credit report to make sure there are no unauthorized open accounts.
Step-by-step explanation:
Just took post test 15/15
Step-by-step explanation: Volume = length x width x height.
You only need to know one side to figure out the volume of a cube.
The units of measure for volume are cubic units.
Volume is in three-dimensions.
You can multiply the sides in any order.
Which side you call length, width, or height doesn't matter.
20-9x=11
4(2x+1)=8
5(2x+5)=-15
3(8x+1)=-21
Answer:Hi
Step-by-step explanation: