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LekaFEV [45]
3 years ago
13

ALGEBRA II 10 POINTS

Mathematics
1 answer:
Bad White [126]3 years ago
4 0

Answer:

6

Step-by-step explanation:

(n- 1)(n)( n +1)=210

n(n²-1)=210

n³-n= 210

n³-n-210=0

let n = 6 => 6³-6-210 = 216-6-210 = 0 (true)

so, n = 6

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Monica’s school band held a car wash to raise money for a trip to a parade in New York City. After washing 125 cars, they made $
nikklg [1K]

The system of linear equations represents the situation is;

x + y = 125

x + y = 1255x + 8y = 775

<h3>Simultaneous equation</h3>

Simultaneous equation is an equation in two unknown values are being solved for at the same time.

let

  • number of quick washes = x
  • number of premium washes = y

x + y = 125

5x + 8y = 775

From equation (1)

x = 125 - y

5x + 8y = 775

5(125 - y) + 8y = 775

625 - 5y + 8y = 775

- 5y + 8y = 775 - 625

3y = 150

y = 150/3

y = 50

  • Substitute y = 50 into

x + y = 125

x + 50 = 125

x = 125 - 50

x = 75

Therefore, the number of quick washes and premium washes Monica’s school band had is 75 and 50 respectively.

Learn more about simultaneous equation:

brainly.com/question/16863577

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