Ask question

Ask question

All categories

4 years ago

9

Nadine can send or receive a text message for $0.15 or get an unlimited number for $5.00. Write and solve an inequality to find

how many messages she can send and receive so the unlimited plan is cheaper than paying for each message.

1 answer:

pogonyaev4 years ago

7 0

I think it would be 33 1/2 messages.

You might be interested in

Solve for the roots in the equation below. In your final answer, include each of the necessary steps and calculations. Hint: Use

QveST [7]

$\bf 27\implies 3^3\\\\
i^3\implies i\cdot i\cdot i\implies i^2\cdot i\implies -1\cdot i\implies -i\\\\
-----------------------------\\\\
x^3-27i=0\implies x^3+3^3(-i)=0\implies x^3+(3^3i^3)=0
\\\\\\
x^3+(3i)^3=0\\\\
-----------------------------\\\\
\textit{difference of cubes}
\\ \quad \\
a^3+b^3 = (a+b)(a^2-ab+b^2)\qquad
(a+b)(a^2-ab+b^2)= a^3+b^3\\\\
-----------------------------\\\\$

$\bf (x+3i)[x^2-3ix+(3i)^2]=0\implies 
\begin{cases}
x+3i=0\implies \boxed{x=-3i}\\\\
x^2-3ix+(3i)^2=0
\end{cases}
\\\\\\
\textit{now, for the second one, we'd need the quadratic formula}
\\\\\\
x^2-3ix+(3i)^2=0\implies x^2-3ix+(3^2i^2)=0
$

$\bf x^2-3ix+(-9)=0\implies x^2-3ix-9=0
\\\\\\
\textit{quadratic formula}\\\\
x= \cfrac{ - {{ b}} \pm \sqrt { {{ b}}^2 -4{{ a}}{{ c}}}}{2{{ a}}}\implies x=\cfrac{3i\pm\sqrt{(-3i)^2-4(1)(-9)}}{2(1)}
\\\\\\
x=\cfrac{3i\pm\sqrt{(-3)^2i^2+36}}{2}\implies x=\cfrac{3i\pm\sqrt{-9+36}}{2}
\\\\\\
x=\cfrac{3i\pm\sqrt{27}}{2}\implies \boxed{x=\cfrac{3i\pm 3\sqrt{3}}{2}}$

7 0

3 years ago

PLEASE HELP NO TROLLS<br> Find the measure of angle A.

ArbitrLikvidat [17]

The measure of angle A is 61 degrees because every triangle is equal to 180 so you would add 80+39 and get 119. Then you would subtract that from 180 and get 61 which is the measure of angle A

4 0

3 years ago

Read 2 more answers

Carl needs 2 2/3 cups of flour to make a certain cake. He has only 3/8 cup of flour in the pantry. How many more cups of flour d

rodikova [14]

First you want to convert the cups of flour so that they have common denominators:

2 2/3 = 2 16/24
3/8 = 9/24

The subtract! 2 16/24 - 9/24 = 2 7/24 cups

3 0

3 years ago

Equilateral triangle ABC is inscribed in Circle O. Use the diagram to find the following measures.

Luba_88 [7]

There is not enough information

3 0

3 years ago

Read 2 more answers

What is the answer to question 5 and explain it Coco Coco Chanel

Vlada [557]

Answer:

Duck pond because you go across the x axis to the 7 and then you go up the y axis 4 and you are at duck pond

Step-by-step explanation:

Hope this helps..

8 0

3 years ago

Read 2 more answers