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sveta [45]
3 years ago
7

If i have 45 pen is ;) and 90 coins how much is that total

Mathematics
1 answer:
Delicious77 [7]3 years ago
4 0

Answer:

40.90

Step-by-step explanation:

I do not know what pen is but if it is dollars then....

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What is the maximum number of possible solutions for the system shown below?
vekshin1

Answer:

B:  4 solutions

Step-by-step explanation:

Combining the two equations results in 2x² = 52, or x² = 26.

This equation has two solutions:  x = ±√26.

As before, x² = 26.  If we substitute 26 for x² in the 1st equation, we get:

26 - 4y² = 16, or 4y² = 10, or y = ±√5/2.  Again:  two solutions.

If we take x to be +√26, y could be ±√(5/2).

Check:  is ( √26, √(5/2) ) a solution of the system?

Subbing these values into the first equation, we get:

26 - 4(5/2) = 16.  Is this true?

Then 10 = 10.  Yes.

Through three more checks, we find that this system has FOUR solutions.

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2 years ago
Mr. Jones' class counted 500 birds on their field trip last week. The following pie graph shows the different bird species and n
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