Ask question

Ask question

All categories

3 years ago

6

The cost of a cell phone bill (C) increases when the number of text messages (T) increases. Write the correct equation for this

scenario, and solve for the cost when the number of texts is 4

1 answer:

Studentka2010 [4]3 years ago

3 0

C = kT where k is some constant number
when T = 4
C = 4k

You might be interested in

Which are the solutions to the quadratic equation x^2=9x+6

AlekseyPX

I will use a quadratic formula:

$x^2=9x+6\ \ \ \ |-9x-6\\\\x^2-9x-6=0\\\\a=1;\ b=-9;\ c=-6\\\\b^2-4ac=(-9)^2-4\cdot1\cdot(-6)=81+24=105\\\\\sqrt{b^2-4ac}=\sqrt{105}\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_1=\dfrac{-(-9)-\sqrt{105}}{2\cdot1}=\dfrac{9-\sqrt{105}}{2}\\\\x_2=\dfrac{-(-9)+\sqrt{105}}{2\cdot1}=\dfrac{9+\sqrt{105}}{2}$

5 0

3 years ago

Alexis cell phone company charges her $35 a month for phone service plus $0.40 for each text message. How many text message does

r-ruslan [8.4K]

Answer:

$92.50

Step-by-step explanation:

$72 - $35 = 37

37 / 0.40 = 92.5

Answer = $92.50

8 0

3 years ago

A girl walked 6km from her house to a market and discovered that she had covered 4/5 of the distance to the market how far is th

Korvikt [17]

Answer: $7.5\ km$

Step-by-step explanation:

Given

Girl has traveled 6 km from her house

She has covered $\frac{4}{5}$ of the distance

Suppose the total distance is x

$\therefore 6=\dfrac{4x}{5}\\\\\Rightarrow x=\dfrac{30}{4}\\\\\Rightarrow x=\dfrac{15}{2}\ \text{km}\\\\\Rightarrow x=7.5\ \text{km}$

3 0

2 years ago

9) True or False: Great Britain officially recognized the Confederate States of America

SpyIntel [72]

It legally recognised the belligerent status of the Confederate States of America (CSA) but never recognised it as a nation and neither signed a treaty with it nor ever exchanged ambassadors.

And i could tell that its not math... :)

Its False

6 0

3 years ago

Angle A and Angle B are supplementary. Angle A has a measure of 3x - 6 and Angle B has a measure of 54. What is the value of x?

Anni [7]

Answer:

44 degrees

Step-by-step explanation:

Since they are supplementary, they add up to 180. This means that

3x - 6 + 54 = 180

Solving,

3x + 48 = 180

subtract 48 from both sides

3x = 132

divide both sides by 3

x = 44 degrees

8 0

2 years ago