Hello! sorry need help again. :) Please solve the problem below...

Answer:

0

Step-by-step explanation:

Using the algebraic expansion

x³ + y³ = (x + y)³ - 3xy(x + y)

Given

x³ + y³ - 12xy + 64

= (x + y)³ - 3xy(x + y) - 12xy + 64

Substitute x + y = - 4 into the expression

= (- 4)³ - 3xy(- 4) - 12xy + 64

= - 64 + 12xy - 12xy + 64

= 0

After solving the equation according to the given statement it is clear that if she sends or receives more than 33 text messages then she has to pay more than $5.

What is inequality?

Inequality is a declaration of the relation of larger, greater or equal to, smaller, and less than or equal to between two digits or mathematical expressions. Either queries or theorems can be used to express inequality problems, and both can be solved using similar methods to those used to solve the equation.

As per the information obtained from the question,

$0.15x>$5.00

x>33.3333

So if she sends or receives more than 33 text messages, she will be paying more than $5.00.

To know more information about inequality:

brainly.com/question/28823603

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The number times 3 that will give 44 is approximately 14.7.

How to solve equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Therefore, let's represent the question in an equation form and find the number.

3 times what equals 44

let

the number  = x

Therefore,

3 × x = 44

3x = 44

divide both sides by 3

x = 44 / 3

x = 14.7

Therefore, the number is approximately 14.7

learn more on equation here: brainly.com/question/30936704

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