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Marianna [84]
3 years ago
7

Eric's cell phone service costs $40.00 a month for unlimited calls. He also pays $0.02 for each text message he sends.

Mathematics
1 answer:
Kaylis [27]3 years ago
4 0

Answer:

A. 40.021

Step-by-step explanation:

Unlimited calls = $40

Text message = $0.021

NOTE:There is a difference between the value you gave for cost of text messages in the question and the values given in the group of answers. I will use $0.021 for cost of text messages since it is common to all answer choices.

Total cost = Cost of unlimited calls + cost of text messages

C = $40 + $0.021

= $40.021

Therefore, the equation which represent the total cost in dollars for a month is 40.021

A. 40.021

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We have that
<span> -3r+3u
</span>
Step 1
<span>Use the distance formula to find the radius
</span><span>r = √(x^2 + y^2)
 (x,y)----------> (</span>-3,3)
r= √(-3^2 + 3^2)=√18=3√2

Step 2
Use the tangent to find the angle  
θ = arctan(y/x)  
θ = arcTan(3/-3)= -45°-------> II Quadrant
then 
θ=180-45=135°

Step 3 
write in polar form
(x,y)------------> (r, θ)
so
(-3,3)----------> (3√2, 135°)

the answer is (3√2, 135°)
6 0
3 years ago
What value of x makes the equation true?
Ratling [72]

Answer:

x=5

Step-by-step explanation:

x=5

3 0
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Read 2 more answers
Brainliest + Points! (please explain)
schepotkina [342]

Answer:

B. $444.44  

Step-by-step explanation:

We have been given that Andrew buys a home entertainment system from an electronics store offering 0% interest for 18 months. This means if she pays monthly payment she will not be charged with any interest for 18 months.

As Andrew will make 18 payments in 18 months, so payment for each month can be found by dividing total cost of entertainment system by 18.

\text{Minimum monthly payment}=\frac{\$8000}{18}

\text{Minimum monthly payment}=\$444.44

Therefore, Andrew should make a monthly payment of $444.44 to avoid paying deferred interest charges for the $8,000 system. and option B is the correct choice.

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3 years ago
A and b are positive integers and a–b = 3. Evaluate the following:<br> 27/1/3 b/9/ 1/2 a
DaniilM [7]

Answer:

\dfrac{1}{27}

Step-by-step explanation:

Given that,

a-b = 3

We need to find the value of \dfrac{27^{\dfrac{1}{3}b}}{9^{\dfrac{1}{2}a}}.

We know that,

27=3^3\\\\9=3^2

So,

\dfrac{27^{\dfrac{1}{3}b}}{9^{\dfrac{1}{2}a}}=\dfrac{3^3^({\dfrac{1}{3}b})}{3^2^{\dfrac{1}{2}a}}\\\\=\dfrac{3^b}{3^a}

We know that : \dfrac{x^p}{x^q}=x^{p-q}

So,

\dfrac{3^b}{3^a}=3^{b-a}

Since, b-a = -3. So,

3^{b-a}=3^{-3}\\\\=\dfrac{1}{3^3}\\\\=\dfrac{1}{27}

So, the value of the given expression is equal to \dfrac{1}{27}.

7 0
3 years ago
The radius of a circle is 2 meters. What is the circle's circumference?
PilotLPTM [1.2K]

Circumference of circle having radius 2 meters is 12.56 meters

Step-by-step explanation:

Radius of circle = 2 m

Circumference of circle = ?

The formula used to find Circumference of circle (C) is:

C=2\pi r

Putting values and finding circumference

C=2\pi r\\C=2*3.14*2\\C=4*3.14\\C=12.56\,\,meters

So, Circumference of circle having radius 2 meters is 12.56 meters

Keywords: Circumference of circle

Learn more about Circumference of circle at:

  • brainly.com/question/5998244
  • brainly.com/question/8929610
  • brainly.com/question/12905000

#learnwithBrainly

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