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Dmitrij [34]
2 years ago
6

X-2y+z=2 bx+ay=3 -2y+z=-4 Choose appropriate values for a and b

Mathematics
1 answer:
jonny [76]2 years ago
8 0

Answer:

Attached

Step-by-step explanation:

Just for your reference, this question will get unlimited number of solutions, attached is a few examples I calculated from Excel. Have fun to pick one or create one to be your favorite.

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3 years ago
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Paul is saving for a video game. It costs $70, including tax. He has already saved $35. How much more does he need to save?
MrMuchimi

Answer:

35

Step-by-step explanation:

70 takeaway 35 is 35 which is what is left over.

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Please help me whoever answers first will get brainliest.
kakasveta [241]

Answer:

C

Step-by-step explanation:

It is C because the 2 is attached to the variable Y

3 0
3 years ago
A tour operator has a bus that can accommodate 20 tourists. The operator knows that tourists may not show up, so he sells 21 tic
dalvyx [7]

Answer:

The expected revenue of the tour operator is 985.

Step-by-step explanation:

There are two outcomes:

Either less than 21 tourists show up and the operator does not have to pay anything. Or 21 tourists show up and the operator has to repay 100.

Anyways, initially he gets the price of all the tickets sold. That is 21 each at 50, so R = 21*50 = 1050.

Then, we need to find the probability that all of the 21 tourists show up. In this case, we have to subtract 100 from the revenue.

Each tourist has a 0.02 probability of not showing up. This means that each has a 1-0.02 = 0.98 probability of showing up. So the probability P that all 21 tourists show up is P = (0.98)^{21} = 0.6542.

So, the expected revenue of the tour operator is

R = 1050 - 100P = 1050 - 100(0.6542) = 984.58

Rounded up, the expected revenue of the tour operator is 985.

6 0
3 years ago
Good morning! Can any math expert help me with this thank you
Rasek [7]
The anwser is 29 !!!!!
4 0
2 years ago
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