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astra-53 [7]
4 years ago
6

Question 5 of 10 This graph shows the solution to which inequality? (3, 3) (-3,-1)

Mathematics
1 answer:
AlekseyPX4 years ago
6 0

Answer:

What graph

Step-by-step explanation:

I’m confused

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Write the expression (4x-2)•(2x+7) in the standard form of a quadratic expression, ax squared +bx+c. What are the values of the
andrew-mc [135]

Answer:

8x^2 + 24x - 14

Coefficients:- a =  8, b = 24 and c = -14.

Step-by-step explanation:

(4x - 2)(2x + 7)

= 4x(2x + 7) - 2(2x + 7)

= 8x^2 + 28x - 4x - 14

= 8x^2 + 24x - 14

Coefficient a =  8, b = 24 and c = -14.

3 0
3 years ago
Un padre para estimular a su hijo para estudiar matemáticas le dice: por cada ejercicio que resuelvas bien te daré 7 € y por cad
Naya [18.7K]

Answer:

8 ejercicios

Step-by-step explanation:

De acuerdo a la información dada, puedes plantear las siguientes ecuaciones:

x+y= 45 (1)

7x-1y= 19 (2)

x= ejercicios que resolvió bien

y= ejercicios que resolvió mal

Primero, puedes despejar x en (1):

x= 45-y (3)

Segundo, debes reemplazar (3) en (2):

7(45-y)-1y=19

315-7y-1y= 19

315-8y= 19

315-19= 8y

296= 8y

y= 296/8

y= 37

Tercero, debes reemplazar el valor de y en (3) para encontrar x:

x= 45-37

x= 8

De acuerdo a esto, la respuesta es que el hijo ha resuelto bien 8 ejercicios.

8 0
3 years ago
A proportion question ​
gizmo_the_mogwai [7]

Answer:

because x,y,z are in continuous proportion

=> x/y = y/z

<=> xz = y² =>

\frac{xz}{y} =y\\\\=>\frac{x^{3}z^{3}  }{y^{3} }=y^{3}(1)

with (1), we have:

x^{2}y^{2}z^{2}(\frac{1}{x^{3} }+\frac{1}{y^{3} }+\frac{1}{z^{3} })\\\\=  (xyz)^{2}(\frac{1}{x^{3}  }  +\frac{y^{3} }{x^{3}z^{3} }+\frac{1}{z^{3} })\\\\=(xyz)^{2} (\frac{x^{3}+y^{3}+z^{3}   }{x^{3}z^{3}}  )\\\\=y^{2}.\frac{x^{3}+y^{3}+z^{3}  }{xz}  \\\\= xz.\frac{x^{3}+y^{3}+z^{3} }{xz} \\\\=x^{3}+y^{3}+z^{3}

Step-by-step explanation:

3 0
3 years ago
Please Answer These questions (on the picture) 20 Points
telo118 [61]
#13 is 17
#14 is 42
#15 is 15
#16 is 7 
#17 is 3
#18 is 4

only giving you those fam good luck homie
8 0
3 years ago
Help with this please !
Murrr4er [49]

Answer:

c

Step-by-step explanation:

7 0
3 years ago
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