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stiks02 [169]
3 years ago
10

Expand and simplify this equation

Mathematics
2 answers:
bija089 [108]3 years ago
7 0

Answer:

8x + 11

Step-by-step explanation:

3(2x + 1) + 2(x + 4) \\  = 3 \times 2x + 3 \times 1 + 2 \times x + 2 \times 4 \\  = 6x + 3 + 2x + 8 \\  = 8x + 11

denis23 [38]3 years ago
3 0

Answer:

6x + 3 + 2x + 8

Step-by-step explanation:

3*2x=6x

3*1=3

2*x=2x

2*4=8

Answer = 6x + 3 + 2x + 8

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Pls answer fast my teacher is waiting!
a_sh-v [17]

Answer:

For company A, y = 24x + 42

For company B, y = 28x + 25

Step-by-step explanation:

x is the number of containers

y is the total cost

For company A, y = 24x + 42

For company B, y = 28x + 25

For the cost of both companies to be the same, then

24x + 42 = 28x + 25

28x - 24x = 42 - 25

4x = 17

x = 4.25

Mr Lycan would have to order about 4 containers so the cost would be the same from each company

4 0
3 years ago
Write an equation. The local bike rental place charges $7 every hour a bike is rented and a $15 renters fee
dangina [55]

Answer:

y = 7x + 15

Step-by-step explanation:

total cost = $7 x every hour + $15 renters fee

7 0
4 years ago
Read 2 more answers
2. What is the sum of the following: 3¾ + 1½? A. 4½ B. 7½ C. 5¼ D. 6
quester [9]
The answer is C. 51/4. Hope I helped!
5 0
4 years ago
Read 2 more answers
Ana ha comprado libros, todos del mismo precio, por valor de 120 euros. El librero le regala 3 libros por lo que cada libro le c
lidiya [134]

Answer:

El primer paso será darle un nombre a nuestras variables:

x= Numero de libros comprados inicialmente

y=Precio inicial de los libros

Ahora analizamos el enunciado,

Lorena ha comprado libros todos del mismo precio por valor de 120 €

x*y=120 € (1)

El librero le regala 3 libros por lo que en realidad cada libro que cuesta 2 € menos

(x+3)(y-2)=120€ (2)

Tenemos entonces dos ecuaciones con dos incógnitas, así que podemos resolver,

Despejamos en (1)

x=120/y

Sustituimos en (2)

(120/y +3)(y-2)=120

120 - 240/y + 3y -6 =120

3y-240/y =120-120+6

3y -240/y =6

y- 80/y=6

y²-80=6y

y²-6y-80=0

Resolvemos la ecuación de segundo grado

a=1

b=-6

c=-80

Aplicando la resolvente,

(6+- √36+320)/2

6+-√356/2

(6+-18,86)/2

Como el valor de y no puede ser negativo la unica respuesta válida será:

y=12,43

Cada libro le costo 12,43€

Sustituyendo en (1)

x=120/12,43

x=9,65 como no puede ser un número racional

x=9

Lorena ha comprado 9 libros

6 0
3 years ago
What is the value of y in the solution set of the system of linear equations shown
zaharov [31]
The answer will be 10 because you plug in y=-×+12 in the equation 4x-2y=36. After you solve and do distributive property your new equation should be 4x+2x-24=36, then you add the like terms of 4x and 2x which will equal to 6x and your new equation should be 6x-24=36. Add 24 from both sides and your equation should be 6x=60, then you divide 60 by 6 and your final answer will be x=10 or 10
4 0
3 years ago
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