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Papessa [141]
2 years ago
15

Step by step pleasee -- algerbra 2g(a) = 4a ; find g(2a)

Mathematics
1 answer:
Iteru [2.4K]2 years ago
4 0

The value of f(2a) is 8a

<h3>What is a function?</h3>

A function can be defined as a rule or expression that shows the relationship between a dependent and independent variable.

From the information given, we have;

g(a) = 4a

Let's determine the value for f(2a)

a = 2a

Let's substitute the value of a as 2a in the function

g(a) = 4a

g(2a) = 4 ( 2a)

Multiply through

g(2a) = 8a

Thus, the value of f(2a) is 8a

Learn more about functions here:

brainly.com/question/2456547

#SPJ1

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1/2*40=2x+8 what is the answer
UkoKoshka [18]
1/2 × 40 = 2x + 8
⇔ 20 = 2x + 8 
⇔ 12 = 2x
⇔  x = 6

6 0
4 years ago
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Find the equation of a line that passes through the given point<br>(-3,-4) and (2,11)
valentina_108 [34]

Answer:

y = 3x + 5

Step-by-step explanation:

The slope of this line is (11 - (-4)) /  (2 - (-3))

= 15/5 = 3

Now we use the point slope form of an equation:-

y - y1 = m(x - x1)

y - 11 = 3(x - 2)

y - 11 = 3x - 6

y = 3x + 5  (answer)

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4 years ago
A box of cereal has the following dimensions: 12 inches x 7.5 inches x 2.5 inches.
alisha [4.7K]

The volume of the box is 225 cubic inches.

Hope this helps!

4 0
3 years ago
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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
Marisa bought three movies for $9.99 each into video games for $14.99 each the prices included tax she gave the cashier $70 how
Mrrafil [7]

Answer:

106.70 because you have to subtract 14.99 by 9.99 which is 106.00 and then add that to 70 and your answer is 106.70. by the way I am a kid and a fifth grader.

3 0
3 years ago
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