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arlik [135]
3 years ago
14

4x(x + y) - y (x + y)=​

Mathematics
1 answer:
siniylev [52]3 years ago
5 0

Answer:

=4x2+3xy−y2

Hope this helps you

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If the monthy cost for 23 HCF is $48.31 , what is the monthly cost for 18 HCF?
antiseptic1488 [7]

<u>Find the equation of the graph:</u>

General Equation : y = mx + b

.

Given that the gradient is 1.45

<u>Sub m = 1.45:</u>

y = 1.45x + b

.

<u>Find b:</u>

Given that x = 23, y = 48.31:

48.31 = 1.45(23) + b

b = 14.96

.

<u>Equation of the graph:</u>

y = 1.45x + 14.96

.

<u>When x = 18:</u>

y = 1.45(18) + 14.96 = $41.06

.

Answer: $41.06

4 0
3 years ago
10 points for correct answer!!!!!!!!
nikklg [1K]

Answer:

wait didn't you already put in the answer the bubble is filled in

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Is 8 a solution to 1/2x+9=13? Explain
posledela
Yes 8 is a solution. this is because when replacing 8 with x on a calculator you do 1/2x8+9 and it will give you an answer of 13
7 0
3 years ago
Read 2 more answers
Resolver el siguiente sistema de ecuación:
snow_tiger [21]

Answer:

x=-1\\y=4

Step-by-step explanation:

\frac{5x+2y}{3}=1

\frac{2x+y}{2}=1

Vamos a utilizar el método de sustitución. Vamos a despejar la segunda ecuación por alguna de las variables. Elegiré la y porque esta sola.

\frac{2x+y}{2}=1

Vamos a empezar por eliminar ese 2 del denominador. Para hacer esto, multiplicamos por 2 ambos lados de la ecuación.

2x+y=1*2

2x+y=2

Como vamos a despejar la y, restamos 2x en ambos lados.

y=2-2x

Listo.

------------------------------------------------------------------------

Procedemos a reemplazar el valor de y en la primera ecuación.

\frac{5x+2y}{3}=1

\frac{5x+2(2-2x)}{3}=1

\frac{5x+4-4x}{3} =1

Procedemos a operar términos semejantes.

\frac{x+4}{3} =1

Nos deshacemos del 3 multiplicando.

x+4=1*3\\x+4=3

Restamos 4

x=3-4\\x=-1

-----------------------------------------------------------------------------

Una vez encontrado el valor de x, procedemos a reemplazar en cualquier ecuación para encontrar el valor de y. Usaré la segunda ecuación.

\frac{2x+y}{2}=1

\frac{2(-1)+y}{2}=1

Procedemos a resolver;

\frac{-2+y}{2} =1

Multiplicamos por 2.

-2+y=1*2

-2+y=2

Sumamos 2

y=2+2\\y=4

-------------------------------------------------------------------------------

Para comprobar que los valores son correctos, reemplazamos ambos valores en cualquier ecuación y el resultado debe ser igual.

Usaré la primera.

\frac{5x+2y}{3} =1

\frac{5(-1)+2(4)}{3} =1

Resolvemos;

\frac{-5+8}{3} =1

\frac{3}{3}=1

1=1

6 0
4 years ago
And 18/42 / blank it's so hard
ASHA 777 [7]

Answer:

Are we suppose to answer this or ...

Step-by-step explanation:

7 0
3 years ago
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