Answer:
Option d is right
Step-by-step explanation:
A function is called one to one if two x will not have same y value.
In other words, in the domain each x is matched with a unique y and if x1 not equals x2 we have the corresponding y1 will not be equal to y2.
In the graph given, we find that the y value say 1 has preimages in both to the right of y axis and to the left of y axis.
Hence this is not one to one.
This is a function because each x has a unique image. If we draw a vertical line in any part of the graph we find that it cuts only one time the graph of f(x)
Hence f is a function but not one to one. A one to one function need not pass through the origin.
Hence we find that of the options given, a,b and c are wrong.
But option d is right.
Answer:
<h2> 12÷49</h2>
Step-by-step explanation:
The total number of bags in the bottle = 20 + 15 = 35
Then
the probability that the first bag is blue = 20/35
If we replace the first bag :
the probability that the second (picked) bag is blue = 15/35
Conclusion:
If two bags are picked at random one after the other with replacement
Then
the probability that the first bag is blue and then red is :
(20÷35)×(15÷35)
= (4÷7)×(3÷7)
= 12÷49
= 0.244897959184
A consumer price index (CPI) measures changes in the price level of market basket of consumer goods and services purchased by households.The annual percentage change in a CPI is used as a measure of inflation
CPI=(1,445÷745)×100=194
The equation which relates the change in price per sticker purchased is y = 2.05x
- The number of stickers purchased = 10
The change in price per sticker purchased can be expressed as :
- Price change / number of stickers
- Change in price per sticker = $20.50 / 10
- Change in price per sticker purchased = 2.05
Therefore, the required equation which related y and x is :
y = 2.05x
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