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LenaWriter [7]
2 years ago
7

The expression 3xn can be written without the mulitiplication sign as 3n. For each expression in parts (a)-(c), use n= 1,2,3,...

10 to evaluate the expression.
Mathematics
1 answer:
zimovet [89]2 years ago
7 0

3N is the correct answer


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X + 8 + 2x <= 2x + 13
sergejj [24]

Answer:

X = 15

Step-by-step explanation:

We move all terms to the left:

<em>x+8+2x-(2x+13)=0</em>

We add all the numbers together, and all the variables:

<em>3x-(2x+13)+8=0</em>

We get rid of parentheses:

<em>3x-2x-13+8=0</em>

We add all the numbers together, and all the variables:

<em>x-5=0</em>

We move all terms containing x to the left, all other terms to the right:

<em>x=5</em>

5 0
2 years ago
What is the solution set of -|x|=-8
Novosadov [1.4K]

-|x|=-8

-x = - 8

x = 8

and

- (-x) = - 8

 x = - 8

Answer

x = -8 ,  8

5 0
3 years ago
A car that sold for $11,900 has a sales tax of $767. How
dlinn [17]

Answer: 9,953

Step-by-step explanation:

The first step is to find what the sales tax rate is for the first car because it will be the same for the second.

11,900/767 = .064

Now to find the cost of the second car we divide.

637/.064 = 9,953.125 Round to nearest dollar.

4 0
2 years ago
Bill at a restaurant came to $136.40 the patrons decide to leave a 15% tip what is the total bill including the tip
gayaneshka [121]

Answer:

156.86

Step-by-step explanation:

We start by dividing 136.40 by 100 so we can figure how much 1 percent,(1.364) once we have that we multiply by 15 (20.46), we add that to the total


5 0
3 years ago
Read 2 more answers
Un alumno multiplica un número por 32 en lugar de multiplicarlo por 23, obteniendo un producto mayor en 54 al producto original.
romanna [79]

Answer:

La suma de cifras del producto original es igual a 12.

Step-by-step explanation:

De acuerdo a la información proporcionada, si multiplicas un número "x" por 32 su resultado sería igual al producto original "y" más 54 dado que dice que se obtiene un producto mayor en 54 al producto original, lo que se puede expresar de la siguiente forma:

32x=y+54

Además, se puede inferir a partir del enunciado que si el número x se hubiera multiplicado por 23 el resultado habría sido el producto original que lo denominamos como "y", por lo que puedes decir que:

y=23x

Ahora puedes reemplazar y=23x en 32x=y+54 y despejar x:

32x=23x+54

32x-23x=54

9x=54

x=54/9

x=6

Finalmente, puedes reemplazar el valor de x en y=23x:

y=23x

y=23*6

y=138

Suma de cifras: 1+3+8 = 12

De acuerdo a esto, la respuesta es que la suma de cifras es igual a 12.

5 0
2 years ago
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