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3 years ago

How to determine which values the variable can not be when simplifying a rational expression?

Mathematics

1 answer:

ANTONII [103]3 years ago

3 0

Answer:

Las expresiones racionales son fracciones que tienen un polinomio en el numerador o en el denominador o en ambos. Aunque las expresiones racionales pueden parecer complicadas porque contienen variables, pueden ser simplificadas de la misma forma que las fracciones numéricas.

El primer paso para simplificar una expresión racional es determinar el dominio, para establecer todos los posibles valores y variables. El denominador en una fracción no puede ser cero porque la división entre cero no está definida. Entonces necesitamos encontrar qué valores de las variables en la expresión harían el denominador igual a cero. Estos valores no pueden estar incluidos en el dominio, por lo que son llamados valores excluidos. Los descartamos desde el inicio, antes de continuar.

Para las expresiones racionales, el dominio excluirá los valores para los que el valor del denominador es 0.

Step-by-step explanation:

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Greeley [361]

<h3><u>Answer</u> :</h3>

$\sf \dashrightarrow \dfrac{22}{7} \div \dfrac{22}{7}$

$\sf \dashrightarrow \dfrac{22}{7} \times \dfrac{7}{22}$

$\sf \dashrightarrow \dfrac{\cancel{22}}{\cancel{7}} \times \dfrac{\cancel{7}}{\cancel{22}}$

$\sf \dashrightarrow 1 \times 1$

$\sf \dashrightarrow 1$

<h3>Hence, answer is 1.</h3>

4 0

2 years ago

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Gizmo can eat 2 bowls of kibbles in 3 minutes. Leo can eat one bowl of kibbles in 6 minutes. Together, how many bowls of kibbles

Westkost [7]

Gizmo eats two bowls in 3 minutes, which means in a minute he would eat a fraction of 2/3 of the bowl.
On the other hand, leo eats one bowl in 6 minutes hence in a minute he eats a fraction of 1/6 of a bowl.
When both combine, then in one minute they can eat a fraction of 2/3+1/6= 5/6.
Therefore, in ten minutes they will take 10× 5/6 = 8.333 equivalent to 8 bowls and a third of a bowl

4 0

2 years ago

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5 STARS!!!

Ksivusya [100]

Since it is given that Boris takes x minutes to run 5 miles it means that Boris' speed will be given as: $\frac{5}{x}$ .

Now, if Dylan runs slower than Boris and takes 12 more minutes to complete the 5 miles run, then that would mean that Dylan takes (x+12) minutes to complete the same run.

In this case we can see the Dylan's speed will be $\frac{5}{x+12}$ .

Thus, the denominator represents the time Dylan takes to run 5 miles if he takes 12 minutes more than Boris.

Therefore, out of the given options, the second option is the correct option.

5 0

3 years ago

Suppose 3x+4y=52 and 5x+y= 30. What is the value of 8x-2y

grandymaker [24]

Answer:

Step-by-step explanation: If you made x, 4 and y, 5 then all equations would make sense if you change the letters to numbers.

(3*4)+(4*10)=52

and

(5*4)+10=30

then

6 0

3 years ago

If a coin is flipped 70 times how many times should it land with tails side face up

Snezhnost [94]

Answer: 35

Explanation:

P(Tail) = 1/2

P(Tail) for 70 times = 1/2 x 70 = 35

5 0

2 years ago

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