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BabaBlast [244]
3 years ago
15

24 slices of cheese for $7.44 or 90 slices of cheese for $28.80 witch is better to buy?

Mathematics
1 answer:
katrin [286]3 years ago
7 0

Answer:

24 slices of cheese at $7.44 is .31 cents a slice

90 slices of cheese at $28.80 is .32 cents a slice

The better buy is 24 slices for $7.44

Step-by-step explanation:

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The parabola with equation $y=ax^2+bx+c$ is graphed below:
Mashutka [201]

Answer:

m-n=2

Step-by-step explanation:

Instead of using the standard form, we can use the vertex form of a quadratic equation:

f(x)=a(x-h)^2+k

Where a is the leading coefficient, and (h, k) is our vertex.

Our vertex point is at (2, -4). So, let’s substitute 2 for h and -4 for k:

f(x)=a(x-2)^2-4

Now, we need to determine a.

We know that it passes through the point (4, 12). So, when x is 4, y must be 12. In other words:

12=a((4)-2)^2-4

Solve for a. Subtract within the parentheses:

12=a(2)^2-4

Add 4 to both sides:

16=a(2)^2

Square:

16=4a

Solve:

a=4

Thererfore, the value of a is 4.

So, our function is:

f(x)=4(x-2)^2-4

Now, let’s find our roots. Set the equation to 0 and solve for x:

0=4(x-2)^2-4

4=4(x-2)^2\\1=(x-2)^2\\x-2=\pm1 \\ x=2\pm1 \\ x=3\text{ or } 1

So, our roots are 1 and 3.

The greater root is 3 and the lesser root is 1.

Therefore, m-n, where m>n, is 3-1 or 2.

Our final answer is 2.

4 0
2 years ago
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The perimeter of the figure below is 141.8ft. Find the length of the missing side
Irina18 [472]

Answer:8.6

Step-by-step explanation:

The easiest way to do this is for you to subtract all the sides from the total perimeter since the perimeter is all of the sides added and your remainder is your answer

Hope this helps

7 0
3 years ago
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How do you figure out the discount for something that is $134 tax 13% and is 50% off??
alukav5142 [94]

mult .13 with 134

add that to 134

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2 years ago
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Is 4.55 and 1.23456 a rational number
kaheart [24]

Problem

Is 4.55 and 1.23456 a rational number

Solution

4.55 can be written as:

455/100 so then it could be a rational number

For the second number we have: 1.23456

And we can write this number as:

123456/100000

So then is also ratioanl

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10 months ago
In a standard deck of 52 playing cards, what is the probability
Deffense [45]

Answer:C

Step-by-step explanation:

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2 years ago
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