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RideAnS [48]
3 years ago
10

Luis is saving money to purchase a new video game. He has a total of 30 coins consisting of nickels and dimes. The value of the

coins is $2.20. Let n represent the number of nickels and let d represent the number of dimes. Which system of equations can be used to determine the number of nickels and the number of dimes Luis has?
Mathematics
1 answer:
bazaltina [42]3 years ago
7 0

14 dimes & 16 nickels.


 do they give you options for the system of equations to choose from?

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4 years ago
Simplify the following expression. (2x-3)(5x^4-7x^3+6c^2-9)
jasenka [17]

The simplification of the expression (2x - 3)(5x⁴ - 7x³ + 6x² - 9) is 10x^5 - 29x⁴ + 33x³ - 18x² - 18x + 27

<h3>Simplification</h3>

(2x - 3)(5x⁴ - 7x³ + 6x² - 9)

= 10x^5 - 14x⁴ + 12x³ - 18x - 15x⁴ + 21x³ - 18x² + 27

= 10x^5 - 14x⁴ - 15x⁴ + 12x³ + 21x³ - 18x² - 18x + 27

= 10x^5 - 29x⁴ + 33x³ - 18x² - 18x + 27

The simplified expression is 10x^5 - 29x⁴ + 33x³ - 18x² - 18x + 27

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6 0
2 years ago
Expand and simplify (3x-4)(2x-1)(4x-3)​
aleksandrvk [35]

Answer:

24x³-62x²+49x-12

Step-by-step explanation:

We can start by multiplying the first two brackets together first.

(3x-4)(2x-1)(4x-3) = (6x²-3x-8x+4)(4x-3)

Evaluate like terms.

(6x²-3x-8x+4)(4x-3) = (6x²-11x+4)(4x-3)

Multiply the two brackets together.

(6x²-11x+4)(4x-3) = 24x³-18x²-44x²+33x+16x-12

Simplify.

24x³-18x²-44x²+33x+16x-12 = 24x³-62x²+49x-12

Tell me if you need it in factorised form.

4 0
3 years ago
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zvonat [6]

50 x 2 = 100

100 x 2 = 200

200 x 2 = 400

400 x 2 = 800

800 x 2 = 1,600

1,600 x 2 = 3,200

3,200 x 2 = 6,400

6,400 x 2 = 12,800

7 0
3 years ago
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