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3 years ago

8 + 5n - 6, use n = 6

Mathematics

1 answer:

emmainna [20.7K]3 years ago

4 0

8+5n-6

8+5(6)-6

8+30-6

38-6

32

32 is the answer.

I hope this helps!
~kaikers

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Susan has a collection of 65 nickels and dimes. If the number of nickels is four times the number of dimes, how many nickels and

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Answer:

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Step-by-step explanation:

Number of dimes: d

Number of nickels: n

Then d + n = 65, and n = 4d

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Let, the number of bracelets be x and the number of necklaces be y.

Given, there are 120 pieces of jewellery which are bracelets and necklaces.

So we can write the equation, $x+y = 120$ ....equation 1

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So, the price of x bracelets = $ $(7)(x)$ =$ $(7x)$

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So, the price of y necklaces = $ $(13)(y)$ = $ $(13y)$

The total amount for the jewellery given = $ 1080.

We can write the equation as,

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Now from equation 1, we can write,

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By substituting this value of x in equation 2, we will get,

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Now we will move 840 to the right side by subtracting it from both sides. We will get,

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We can get y by moving 6 to the other side by dividing it to both sides. We will get,

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$y =\frac{240}{6}$

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