Una empresa de correo internacional cobra así, si el paquete (pesa por libras), donde x es un número entero. Al colocar el paquete al correo, cobran 1,65 por las primeras cinco libras de peso y 12 centavos de dólar por cada libra adicional. Si en el correo cobran 3,45 dólares, la ecuación que me permite calcular el peso del paquete es: 0,5- (1,65) + 0,12 x = 3,45 1,65 + 0,12 x = 3,45 1,65 + 0,12 (x - 5) = 3,45 165 + 12 x – 3,45

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation:

d, x=8

step-by-step explanation:

simplifying

4x + -5 = 2x + 11

reorder the terms:

-5 + 4x = 2x + 11

reorder the terms:

-5 + 4x = 11 + 2x

solving

-5 + 4x = 11 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-5 + 4x + -2x = 11 + 2x + -2x

combine like terms: 4x + -2x = 2x

-5 + 2x = 11 + 2x + -2x

combine like terms: 2x + -2x = 0

-5 + 2x = 11 + 0

-5 + 2x = 11

add '5' to each side of the equation.

-5 + 5 + 2x = 11 + 5

combine like terms: -5 + 5 = 0

0 + 2x = 11 + 5

2x = 11 + 5

combine like terms: 11 + 5 = 16

2x = 16

divide each side by '2'.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

( - 4 , -7 )

all the lines must parallel  

step-by-step explanation:

coordinates of c = ( - 1 , 2 )

3 units left = ( -4 , 2 )

9 units down = ( - 4 , 11 )