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alexandr402 [8]
3 years ago
9

What is x in the equation 17x-8?

Mathematics
1 answer:
algol [13]3 years ago
4 0
17x-8 = 0
17x = 8
x = 8/17
x = 0.47
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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
Explain to me what a proportion is​
Leona [35]

Answer:

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2 ×

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Step-by-step explanation:

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3 years ago
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4 years ago
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How to solve 10-3(3x-40)=-9x
vichka [17]
<span>Simplifying 10 + -3(3x + -40) = -9x
 
Reorder the terms: 10 + -3(-40 + 3x) = -9x
10 + (-40 * -3 + 3x * -3) = -9x
10 + (120 + -9x) = -9x
 
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Add '9x' to each side of the equation. 130 + -9x + 9x = -9x + 9x
 
Combine like terms: -9x + 9x = 0 130 + 0 = -9x + 9x 130 = -9x + 9x

Combine like terms: -9x + 9x = 0 130 = 0
 
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 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.</span>
3 0
4 years ago
What is the mean?<br> {38, 21, 64, 59, 21, 12, 13, 66, 55, 21}
pogonyaev

Answer:

37

Step-by-step explanation:

Add all the numbers up and you will get 370. How many numbers are there in total? 10 right so you divide 370 with 10 and get 37.

hope this help

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