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Ganezh [65]
4 years ago
10

Y=4x+19 -8x-5y=-11 Can u help me on this

Mathematics
2 answers:
Tanzania [10]4 years ago
6 0
Y=4x+19 (1)
-8x-5y=-11 (2)
sub 1 into 2
-8x-5(4x+19)=-11
-8x-20x-95=-11
-28x-95=-11
-28x=84
x=84/-28
x= -3
sub into 1
y=4(-3)+19
y=7

therefore x= -3 and y=7
agasfer [191]4 years ago
3 0
I'm just going to do substitution
Steps:
1. Substitute the y in -8x-5y=-11 for 4x + 19

-8x-5(4x + 19)= -11
-8x + (-20x) + (-95)= -11
-28x + (-95)=-11
2. Now add 95 on both sides
-28x= 84
3. Divide by 28 on both sides
4. X=-3
5. Now substitute the x in y= 4x + 19 for -3
Y= 4(-3) + 19
Y= -12 + 19
Y= 7
6. Your answer is x = 3 and y= 7 or (3,7)
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3 years ago
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1. EL precio a la venta de una impresora de inyección de tinta es de $285.000 incluida una Ganancia del 35%. ¿cuánto le cuesta a
yuradex [85]

Excluyendo el componente de ganancia del coste para el consumidor según (1), la impresora tuvo un coste de $ 211.111,11 para el vendedor.

<h3>¿Cómo encontrar el precio de una impresora sin ganancia?</h3>

En el enunciado tenemos el precio de una impresora para el consumidor, el cual comprende el dinero invertido por vendedor más la ganancia <em>esperada</em>. Este indicador observa la siguiente fórmula:

C' = C · (1 + r/100)     (1)

Donde:

  • C - Coste asumido por el vendedor, en unidades monetarias.
  • C' - Coste para el consumidor, en unidades monetarias.
  • r - Tasa de ganancia, en porcentaje.

Si sabemos que C' = $ 285.000 y r = 35 %, entonces el coste asumido por el vendedor es:

285.000 = 1,35 · C'

C' ≈ 211.111,11

Excluyendo el componente de ganancia del coste para el consumidor según (1), la impresora tuvo un coste de $ 211.111,11 para el vendedor.

Para aprender más sobre ganancias: brainly.com/question/8421949

#SPJ1

4 0
3 years ago
Help me please, asap-
Nimfa-mama [501]
The answer is 191/30

8 0
2 years ago
5x - 2&gt;13<br> SOLVE THIS PLEASE STEP BY STEP ASAP
drek231 [11]
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=> 5x > 3+2
=> x > 5/5
=> x > 1
3 0
3 years ago
What is the answer for number 1
poizon [28]
R = -2 :) hope this helps
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3 years ago
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