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3 years ago

If 7 notepads cost $3.15, what is the unit price of the notepads?

Mathematics

2 answers:

vovangra [49]3 years ago

6 0

Answer:

$0.45

Step-by-step explanation:

Unit price is basically the same as unit rate. Unit rate is the cost of one item.

So $3.15 divided by seven is point fourty-five.

ollegr [7]3 years ago

6 0

Answer: 45 cents

Step-by-step explanation: Unit price means the cost per unit. In this case, the cost per notepad.

Since we know that it costs $3.15 for 7 notepads, to find the cost for 1 notepad, we need to divide 7 into $3.15 or 7 into 3.15.

I used long division wish I have shown in the image attached and ended up with .45 which means that each notepad costs 45 cents.

So the unit price for 7 notepads is 45 cents.

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Step-by-step explanation:

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3 years ago

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3 years ago

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Step-by-step explanation:

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3 years ago

-7x + 4y =10<br><br> -5x + 3y = 8

Margaret [11]

Answer:

x = 2, y = 6

(2, 6)

Step-by-step explanation:

The system of equations is solved when we find the "x" and "y" pair that is true for both equations.

We can use elimination, which is when we eliminate one of the variables. This can be done when both equations have a variable that has the same number.

Make both equations have "12y". Multiply each term by the same number.

-7x + 4y =10 }x3 => -21x + 12y = 30

-5x + 3y = 8 }x4 => -20x + 12y = 32

Subtract the equations from each other to get rid of 12y.

. -20x + 12y = 32

. 1x + 0y = 2 0y is nothing and 1x is x.

. x = 2 We have solved for x.

Now solve for y.

Use one of the equations:

-5x + 3y = 8 Substitute x for 2

-5(2) + 3y = 8 Simplify

-10 + 3y = 8 Start isolating x. Add 10 to both sides

3y = 18 Divide both sides by 3

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The system of equations intersect at (2, 6).

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3 years ago