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Vaselesa [24]
2 years ago
6

Which system can be used to represent, x the number of tetra fish, and y, the number of goldfish, he purchased?

Mathematics
1 answer:
Fed [463]2 years ago
7 0
The equation that would best describe the situation would be the first option. To solve this question, simply break down the question into sections and then use variables X and y to represent each of the things asked for in the problem. We know the following:

X = no of tetra fish
Y = no of goldfish
If there is twice as much goldfish than tetra fish, then it would be 2y.

X = 2Y.

Then knowing what X and y represent, find the equation that gives the total cost of fish he bought, knowing that 1.50 is for a goldfish and 2.00 is for a tetra fish.
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Rewrite 2 x 2^4 as an expression as a single power
Mnenie [13.5K]

<u>If you're wanting it alone just with the exponents, here is how you're going to do it:</u>

Technically, the 2 alone has a power, and it's simply just one. When exponents are being used in numbers multiplying together, they add.

So, to simplify this it'd be 2^5.

<u>If you're wanting the actual answer, you would do exponents first. Remember that exponents are just the number being multiplied by itself x times:</u>

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Now we just need to multiply this by 2 and you'll get 32.

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Answer:

In mathematics, the intersection A ∩ B of two sets A and B is the set that contains all elements of A that also belong to B (or equivalently, all elements of B that also belong to A), but no other elements. For explanation of the symbols used in this article, refer to the table of mathematical symbols.

We just saw how to join two sets using "Union" (and the symbol ∪). There is also "Intersection" which means "has to be in both". Think "where do they overlap?". The Intersection symbol is an upside down "U" like this: ∩

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