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nadezda [96]
3 years ago
13

Question 30

Mathematics
1 answer:
aleksklad [387]3 years ago
6 0

Answer:3

Step-by-step explanation:

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Marcos had 15 coins in nickels and quarters. He had 3 more quarters than nickels. He wrote a system of equations to represent th
hodyreva [135]

Answer:

There are 6 coins in nickels and 9 coins in quarters.

Step-by-step explanation:

Now, to find the solution.

According to question:

The number of nickels = x.

The number of quarters = y.

So, the total number of coins:

x+y=15.

He had 3 more quarters than nickels.

Thus,

y=x+3 .....(1)

Now, to get the solution:

x+y=15

Substituting the equation (1):

x+(x+3)=15

x+x+3=15

2x+3=15

<em>Subtracting both sides by 3 we get:</em>

<em />2x=12<em />

<em>Dividing both sides by 2 we get:</em>

x=6.

<em>The number of nickels = 6.</em>

Now, substituting the value of x in equation (1):

y=x+3\\\\y=6+3\\\\y=9.

<em>The number of quarters = 9.</em>

Thus, there are 6 coins in nickels and 9 coins in quarters.

6 0
3 years ago
Plz help me, plzzzzz <br> (plz no trolling)
Phantasy [73]
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Add;200g+0.04kg=-----------dag
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It's 200.04 dag

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3 years ago
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What is true about the sum of the two polynomials ? 6s^2t-2st^2 and 4s^2t- 3st^2? The sum of a binomial is 2 . the sum of a bino
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The sum of the polynomials will be:
(6s^2t-2st^2)+(4s^2t-3st^2)
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=10s^2t-5st^2
Thus the answer is:10s^2t-5st^2

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3 years ago
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