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Elden [556K]
3 years ago
6

Natalie likes to mail lots of postcards when she goes on vacation. In 2014 , the cost of a postcard stamp was $0.34.

Mathematics
1 answer:
Maksim231197 [3]3 years ago
3 0

Answer:

Part A: The total cost of 10 stamps  =  $3.4

Part B: The total cost of 100 stamps  =  $34

Step-by-step explanation:

The cost of each postcard stamp = $0.34

Part A:

Number of postcard Natalie buys  =  10

So, the cost of 10 postcard stamps  =  10 x Cost of each stamp

                                                              = 10  x ($0.34)  = $3.4

or, the total cost of 10 stamps  =  $3.4

Part B:

Number of postcard Natalie buys  =  100

So, the cost of 100 postcard stamps  =  100 x Cost of each stamp

                                                              = 100  x ($0.34)  = $34

or, the total cost of 100 stamps  =  $34

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erica [24]

Answer:

28 + 8y - 8

Step-by-step explanation:

According to the problem;

-2(3x + 12y - 17x - 16y + 4)

Collecting like terms;

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28 + 8y - 8

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5. Assuming that a is not equal to c, find the x-value of the intersection point of the lines y = ax +b and y = cx + d.
Ostrovityanka [42]

The x-value of the intersection point of the lines is ( d - b)/(a-c)

<h3>Intersection of lines</h3>

Given the equation of a line expressed as;

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Equating both lines, we will have:

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Make x the subject of the formula:

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x (a-c) = d - b

x = ( d - b)/(a-c)

Hence the x-value of the intersection point of the lines is ( d - b)/(a-c)

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Answer:

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Step-by-step explanation:

We can use the Polynomial Remainder Theorem. The PRT states that if we have a polynomial f(x) being divided by a factor in the form of (x-a), then the remainder of the polynomial is given by f(a).

We have the polynomial:

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Then our remainder will be:

f(-1)

Evaluate:

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So, our remainder will be 8.  

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3 years ago
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