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Katyanochek1 [597]
3 years ago
6

Solve a/b x - c = 0 for x.

Mathematics
1 answer:
VladimirAG [237]3 years ago
4 0
Hey


X=cb/a

thanks for asking

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Marci has a total 50 stamps, consisting of 25 cent stamps and halves the number of 15 cent stamps, they will be worth of $16.50.
lukranit [14]

Answer:

Originally there were 30, 25 cents stamps and 20, 15 cent stamps.

Step-by-step explanation:

We are given the following in the question;

Let x be the number of 25 cents stamps and y be the number of 15 cents stamps.

Marci has a total 50 stamps.

Thus, we can write

x+y=50

Also,

x = \dfrac{y}{2}

Total cost = $16.50

Thus, we can write the equation:

0.25x + 0.15y = 16.50

Solving the two equations:

0.25\dfrac{y}{2} + 0.15y = 16.50\\\\(0.125+0.15)y = 16.50\\y = 60\\x = 30

Originally,

x+y = 50\\30 + y = 50\\y = 20

Thus, originally there were 30, 25 cents stamps and 20, 15 cent stamps.

7 0
3 years ago
Trixie goes to the pet store with $17.00. She buys 2 goldfish for $2.50 each and 3 hermit crabs for $1.00 each. How many money d
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Answer:

$9

Step-by-step explanation:

7 0
1 year ago
The population of a city decreases by 1.2% per year. If this year's population is
Anarel [89]

Answer:

Your answer

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Step-by-step explanation:

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2 years ago
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Evaluate the expression when x=6 and y=4.
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3(4)+6
12+6
The answer is 18
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Explain why you might want to write very large and very small numbers like the ones in the example problem in scientific notatio
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Extremely large and small numbers that have many zeros are long to write and take up a lot of room. So, by using scientific notation a number can be written shorter. For example, numbers such as 295,000,000,000 can be shortened to 2.95x10^{11}. This is easier to write and understand. This is why the scientific notation is used over standard.

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2 years ago
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