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777dan777 [17]
4 years ago
12

What should you do if you think that a bill is wrong or want more information about it How should your creditor respond to your

attempt to resolve the situation?
Mathematics
1 answer:
cestrela7 [59]4 years ago
5 0

The first thing to do is to stay calm, irrespective of the size of the charge. Take a few minutes to analyze the billing and scour your memory; don’t put it off, because sometimes immediate action is absolutely required, but don’t get so upset that you act before you think.

In most cases, you will be able to eliminate a mistake made by you as a possibility relatively quickly; usually thinking about the charge for a few quiet minutes and/or talking to whoever might be authorized to use the card (remember, most any family member can use the card online with or without your permission) will settle the question.

If the mistake was yours, grin and bear it and pay the bill; if not, it is very important that you determine whether or not actual fraud was perpetrated by a third-party. There are some easy indicia of that. For example, any charge for a tiny amount such as one dollar, often tells you that someone was “testing” the efficacy of their fraud before actually spending a significant amount of your money.

Unless you can absolutely eliminate fraud by a third-party, you need to assume that it was just that, report it immediately to your credit card company and take whatever other steps are necessary to protect yourself. This of course would include examination of every one of your credit card and bank accounts. Best to take no chances; when in doubt, cancel them out!

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Answer:

I think its b

Step-by-step explanation:

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3 years ago
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Which of these equations represent functions? Check all that apply.
AVprozaik [17]
A is quadratic function
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What is the opposite of 12?<br> NEED HELP FAST
Liono4ka [1.6K]

Answer:

-12

Step-by-step explanation:

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A rectangular box with a square base is to be constructed from material that costs $9 per ft2 for the bottom, $5 per ft2 for the
kramer

Answer:

18.73ft^3

Step-by-step explanation:

Let

Side of square base=x

Height of rectangular box=y

Area of square base=Area of top=(side)^2=x^2

Area of one side face=l\times b=xy

Cost of bottom=$9 per square ft

Cost of top=$5 square ft

Cost of sides=$4 per square ft

Total cost=$204

Volume of rectangular box=V=lbh=x^2y

Total cost=9(x^2)+5x^2+4(4xy)=14x^2+16xy

204=14x^2+16xy

204-14x^2=16xy

y=\frac{204-14x^2}{16x}=\frac{102-7x^2}{8x}

Substitute the values of y

V(x)=x^2\times \frac{102-7x^2}{8x}=\frac{1}{8}(102x-7x^3)

Differentiate w.r.t x

V'(x)=\frac{1}{8}(102-21x^2)=0

V'(x)=0

\frac{1}{8}(102-21x^2)=0

102-21x^2=0

102=21x^2

x^2=\frac{102}{21}=4.85

x=\sqrt{4.85}=2.2

It takes positive because side length cannot be negative.

Again differentiate w.r. t x

V''(x)=\frac{1}{8}(-42x)

Substitute the value

V''(2.2)=-\frac{42}{8}(2.2)=-11.55

Hence, the volume of box is maximum at x=2.2 ft

Substitute the value  of x

y=\frac{102-7(2.2)^2}{8(2.2)}=3.87 ft

Greatest volume of box=x^2y=(2.2)^2\times 3.87=18.73 ft^3

5 0
4 years ago
Twice the difference of a number and 2 is at most -27
igor_vitrenko [27]
<h2>Explanation:</h2><h2 />

When we say "a is at most b" we mean that "a is less than or equal to b" or "a is not greater than b". So let's solve this problem as follows:

Step 1. Twice the difference of a number and 2

Let's call that unknown number as n. Then, twice the difference of a number and 2 is:

2(n-2)

Step 2. Twice the difference of a number and 2 is at most -27

2(n-2)\leq -27

_________________________________________

So the mathematical form of the statement <em>twice the difference of a number and 2 is at most -27 </em>is:

\boxed{2(n-2)\leq -27}

5 0
3 years ago
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