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tatyana61 [14]
3 years ago
8

What is the factored form of 20x - 10y + 15z?

Mathematics
2 answers:
ivanzaharov [21]3 years ago
8 0

Answer:

5 ( 4 x − 2 y + 3 z )

Andre45 [30]3 years ago
6 0
Simplifying
20x + -10y + 15z

Factor out the Greatest Common Factor (GCF), '5'.
5(4x + -2y + 3z)

Final result:
5(4x + -2y + 3z)
:

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Part of the proceeds from a garage sale was $470 worth of $10 and $20 bills. If there were 14 more $10 bills than $20 bills, fin
Brums [2.3K]

There are 25 $10 bills and 11 $20 bills.

Step-by-step explanation:

Given,

Worth of proceeds from garage = $470

Let,

x be the number of $10 bills

y be the number of $20 bills.

According to given situation;

10x+20y=470       Eqn 1

x = y+14                Eqn 2

Putting value of x from Eqn 2 in Eqn 1

10(y+14)+20y=470\\10y+140+20y=470\\30y=470-140\\30y=330

Dividing both sides by 30

\frac{30y}{30}=\frac{330}{30}\\y=11

Putting y=11 in Eqn 2

x=11+14\\x=25

There are 25 $10 bills and 11 $20 bills.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/1279756
  • brainly.com/question/1284310

#LearnwithBrainly

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Step-by-step explanation:

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