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riadik2000 [5.3K]
3 years ago
7

Write the expression -3x^2+2y^2+5xy-2y+5x^2-3y^2 in the simplest form

Mathematics
1 answer:
olchik [2.2K]3 years ago
3 0
I think it's 39x+12y
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Step-by-step explanation:

Simply we know this is an isosceles triangle meaning that:

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The graph shows the height,h, in inches, of a plant after d days. The plant had a height of 4 inches after 6 days. Which equatio
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2/3d=h

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3 years ago
A collection of 108 coins containing only quarters and nickels is worth $21.
Rudiy27

Answer:

The value could replace q is 108 - n ⇒ the last answer

Step-by-step explanation:

* Lets study the values of quarters and nickles

- One quarter = 25 cents

- One nickle = 5 cents

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- The coins are nickles or quarters only

- The coins worth $ 21

* Lets solve the problem

∵ The number of coins is 108 coins

- Let the quarter is q and the nickel is n

∴ q + n = 108 ⇒ (1)

∵ The coins worth $21

∵ $ 1 = 100 cents

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∵ The nickels = 5 cents

∴ 25q + 5n = 2100 ⇒ (2)

- To find the value which replace q use equation (1)

∵ q + n = 108 ⇒ subtract n from both sides

∴ q = 108 - n

* The value could replace q is 108 - n

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3 years ago
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