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Gelneren [198K]
2 years ago
11

Cell phone company A charges $20 per month plus $0.05 per text message. Cell phone company B charges $10 per month plus 0.07 per

text message. Is there any number of text messages that will result in the exact same charge from both companies?
Mathematics
1 answer:
balu736 [363]2 years ago
7 0

Answer:

Yes, 500 texts.

Step-by-step explanation:

If you write out the equations, you can just set them up equal to each other and simplify.

A = .05x + 20

B = .07x + 10

.05x + 20 = .07x + 10  (subtract 10 from both sides)

.05x + 10 = .07x  (subtract .05x from both sides)

10 = .02x  (multiply both sides by 50

x = 500 texts

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Answer:

So we got:

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More attention for (n^{\frac{-1}{3}}\right))^6\\

n^{-2}

\frac{1}{n^2}

Join:

m^4\frac{1}{n^2}

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3 years ago
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Aleks04 [339]

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3 years ago
Can someone help me on problem 2<br> Please ?
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2 years ago
Read 2 more answers
Which is one of the transformations applied to the graph of f(x)=x2 to change it into the graph of g(x) = -x2 + 16x – 44?
KatRina [158]

Answer:

Only option D is one of the transformations needed.

Step-by-step explanation:

The graph of f(x)=x^2 is a positive parabola with x=0 as the zero in ordinates and also 0 as a zero x. This is, the graph passes in (0,0) and this is the only point it crosses both axis, then for every x value we will gave a positive f(x).

Here I attach a graph that shows both, f(x)=x^2 and g(x)=-x^2+16x-44.

As you can see, for transforming f(x) in g(x) we need to reflect it over the x axis, as g is open downwards. Then, as the quadratic term is still being x^2 we do not wide it (as you see in the graph both curves are equally widened).

Then, we can also see that the graph is shifted right, so we do not shift it left 8 units (notice that we shift it right 8 units).

So, after reflecting over the x axis and shifting right we need to shift it UP, as we can see the graph is over the x axis.

So, the three transformations needed are:

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3. shift up 20 units.

So, from the options you proposed we chose only d, to which we MUST add the transformations noted above.

Sorry for the mistake!

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2 years ago
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MrRa [10]

Answer:

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I hope this helps!

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