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makkiz [27]
3 years ago
13

A bag contains green marbles and blue marbles,

Mathematics
1 answer:
dexar [7]3 years ago
8 0

There are 13 green marbles in the bag.

Step-by-step explanation:

Total marbles = 18

Let,

Green marbles = x

Blue marbles = y

According to given statement;

The number of green marbles is 2 less  than 3 times the number of blue marbles.

x = 3y-2    Eqn 1

x+y=18      Eqn 2

Putting value of x from Eqn 1 in Eqn 2;

(3y-2)+y=18\\3y-2+y=18\\4y=18+2\\4y=20

Dividing both sides by 4

\frac{4y}{4}=\frac{20}{4}\\y=5

Putting y=5 in Eqn 1

x=3(5)-2\\x=15-2\\x=13

There are 13 green marbles in the bag.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/8054589
  • brainly.com/question/7932185

#LearnwithBrainly

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<h3>What is decimal?</h3>

The accepted method for representing both integer and non-integer numbers is the decimal numeral system. It is the expansion of the Hindu-Arabic numeral system to non-integer values. Decimal notation is the term used to describe the method of representing numbers in the decimal system. The base-10 number system, arguably the most widely used number system, is referred to as decimal. The decimal number system consists of ten single-digit numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. The number following nine is 10.

Here,

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Terminating decimal representation,

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3/13 and 7/24 will be repeated in decimal form. The final two decimal places are 3/16 and 4/125.

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