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Lostsunrise [7]
4 years ago
15

A wireless phone plan costs Eric $35 for a month of service during which he sent 450 text messages. If he was charged an fixed a

fee of $12.50, how much did he pay per text?
Mathematics
1 answer:
Taya2010 [7]4 years ago
4 0

Answer:

5 cents

Step-by-step explanation:

Let m = cost per message

450m + 12.5 = 35    subtract 12.5 from both sides

450m = 35-12.5

450m = 22.5           divide both sides by 450

m = 22.5/450

m = .05

The cost is $.05 per message  ... 5 cents

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(D)

Step-by-step explanation:

4 0
3 years ago
The function h defined by h(t)=(49 + 4.9t)(10 - t) models the height, in meters, of an object t seconds after it is dropped from
kipiarov [429]

Answer:

Step-by-step explanation:

Let's FOIL this out and get it into standard quadratic format:

h(t)=-4.9t^2+490. The lack of a linear term in the middle means therewas no upwards velocity, consistent with the object being dropped straight down as opposed to thrown up in the air tand then falling in a parabolic path. The -4.9t² represents the acceleration due to gravity, and the 490 represents the height from which the object was dropped. The constant in a quadratic that is modeling parabolic motion always represents the height from which the object was dropped (or launched). That's how you know.

5 0
3 years ago
Find the Area. Simplify your answer.​
Vaselesa [24]

Answer:

Area = 9x^2 square units

Step-by-step explanation:

<u>Key skills needed: Area of a parallelogram</u>

1) This shape is a parallelogram, and the way to find the area of a parallelogram is:

                                A = bh

A = area

b = base (the side at the bottom

h = the height ( the length that runs from one side to another and makes a right angle)

2) The base (b) would be 3x. The height (h) would also be 3x

3) This means A = 3x(3x)

3 times 3 is 9 --> and x times x is x^2

Therefore the area is --> 9x^2

<em>Hope you understood and have a nice day!! :D</em>

5 0
3 years ago
Expressions are equivalent???
Semenov [28]

Answer:

only the first option is equivalent

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago
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