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choli [55]
3 years ago
12

Alysha has a collection of some and nickel rolls that she’d like to take to the bank. Each dime roll has 50 dimes and each nicke

l roll has 40 nickels. Write an equation to represent the total value of Alysha’s dime and nickel collection. Define your variables.
Mathematics
1 answer:
Sati [7]3 years ago
4 0

t = 5d + 2n is the equation to represent the total value of Alysha’s dime and nickel collection

<h3><u>Solution:</u></h3>

Let "d" be the number of rolls of dimes

Let "n" be the number of rolls of nickels

Let "t" be the total value of coins

We know that,

Value of 1 dime = $ 0.10

Value of 1 nickel = $ 0.05

Each dime roll has 50 dimes and each nickel roll has 40 nickels

From above given statement, we can frame a equation as,

Total value = 50 dimes x Value of 1 dime + 40 nickels x Value of 1 nickel

t = 50 \times d \times 0.10 + 40 \times n \times 0.05\\\\t = 5d + 2n

Thus the equation to represent the total value of Alysha’s dime and nickel collection is found

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Find the equation of a circle with a center at (7,2) and a point on the circle at (2,5)?
monitta

Answer:

(x-7)^2+(y-2)^2=34

Step-by-step explanation:

We want to find the equation of a circle with a center at (7, 2) and a point on the circle at (2, 5).

First, recall that the equation of a circle is given by:

(x-h)^2+(y-k)^2=r^2

Where (<em>h, k</em>) is the center and <em>r</em> is the radius.

Since our center is at (7, 2), <em>h</em> = 7 and <em>k</em> = 2. Substitute:

(x-7)^2+(y-2)^2=r^2

Next, the since a point on the circle is (2, 5), <em>y</em> = 5 when <em>x</em> = 2. Substitute:

(2-7)^2+(5-2)^2=r^2

Solve for <em>r: </em>

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Simplify. Thus:

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Finally, add:

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We don't need to take the square root of both sides, as we will have the square it again anyways.

Therefore, our equation is:

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4 0
3 years ago
Find the difference: 11 - 4.7
shutvik [7]

<u><em>Answer: 6.3 *The answer must be have a decimal point.*</em></u>

Explanation:

First, subtract by the numbers. Subtract it's going to be find the difference between the numbers.

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You can also add by the numbers.

6.3+4.7=11

11-6.3=4.7

Hope this helps!

Thank you!

Have a great day!

7 0
3 years ago
Read 2 more answers
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