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Arlecino [84]
4 years ago
11

0.8x+0.7y=4 2.4x-0.4y=-8

Mathematics
1 answer:
lesya [120]4 years ago
6 0

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

( − 2 , 8 )

Equation Form:

x = − 2 , y = 8

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Over time, the value of the property at 397 West Lake Street increased by 275%. If the initial value of the property was P, whic
VMariaS [17]

Answer:

The expression is 2.75P.

Step-by-step explanation:

If P represents the initial value and the value increases by 275%, then you can say that it is worth 2.75 times as much as the initial value.  

6 0
3 years ago
HELP I NEED HELP ASAP
Andrei [34K]

Answer:

D its D

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
In the Itty Bitty High School, there are 85 students. There are 27 students who take French, 51 who take Geometry and 38 who tak
andrew-mc [135]

Answer:

58 students

Step-by-step explanation:

Given

Total = 85

French = 27

Geometry = 51

History = 38

None = 5

All = 2

Required

Students that take only 1 subjects

The attached image illustrates the question.

For French only (x), we have:

x + 7 -2+10-2+2=27

x + 15=27

Collect like terms

x =- 15+27

x =12

For Geometry only (y), we have:

y+10-2+15-2+2=51

y+23=51

Collect like terms

y=-23+51

y=28

For History only (z), we have:

z +15-2+7-2+2=38

z +20=38

Collect like terms

z =-20+38

z =18

Students with one subject is then calculated as:

1\ subject = x+y+z

1\ subject = 12 + 28 + 18

1\ subject = 58

5 0
3 years ago
What set of reflections would carry trapezoid ABCD onto itself?
Ne4ueva [31]
Y=x,x-axis,y=x, y-axis
6 0
3 years ago
Una empresa embotelladora de gaseosas lanzará su propia bebida "Delicia" de un litro a un costo variable de S/ 2.50 por unidad,
KIM [24]

Por la ecuación de utilidad, necesitamos una producción de 7,667 botellas de un litro de capacidad para obtener un total de utilidades de S/ 30.000.

<h3>¿Cómo determinar las utilidades por la venta de bebidas gaseosas?</h3>

Las utilidades (U') se obtienen de sustraer los costes de producción (Cp) a las utilidades <em>netas</em> (U). Los costes de producción (Cp) son la suma de costes <em>variables</em> (C') y costes <em>fijos </em>(C). y la utilidades <em>netas</em> proceden de la venta de botellas. En consecuencia, tenemos la siguiente expresión:

U' = U - Cp

U' = U - C' - C

A continuación, desarrollamos y resolvemos la ecuación resultante:

30000 = 4.50 · x - 2.50 · x - 18500

1.50 · x = 11500

x = 7667

Por la ecuación de utilidad, necesitamos una producción de 7,667 botellas de un litro de capacidad para obtener un total de utilidades de S/ 30.000.

Para saber sobre utilidades: brainly.com/question/16933668

#SPJ1

6 0
3 years ago
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