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Sliva [168]
3 years ago
14

Which ordered pair is a solution of the equation? y=-3x-4

Mathematics
2 answers:
Svetllana [295]3 years ago
4 0

Answer:

(1, - 7 )

Step-by-step explanation:

To find a solution, choose any value for x, substitute into the equation and solve for y

Choose x = 1, then

y = - 3(1) - 4 = - 3 - 4 = - 7

Thus (1, - 7 ) is a solution to the equation

mario62 [17]3 years ago
3 0

Answer:

(X , Y ) = ( -2 , 2)

Step-by-step explanation:

y = -3x - 4

using value ( x , y ) : ( -2 , 2 )

=> (2 ) = -3 (-2) -4

= > 2 = 6 -4

=> 2 = 2 hence proved

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F(x) = -5x<br> g(x) = 8x^2 - 5x - 9<br> find (f•g)(x)
Stells [14]

Answer:

B

Step-by-step explanation:

You are making composite functions, since all the answers provided dont fit, I only suggest to clearify that the lone term in the B option, is actually 45x and not 45.

If this is the case, composite functions means that you eval the expresion g(x) in every x variable found in f(x).

Using this, it gives you that f(g(x))= -40x^{2} +25x+45

6 0
3 years ago
A square has a side length 9 cm. What is its area? A square has an area of 9 cm2. What is its side length?
Kay [80]

Answer:

Area = 81; Side Length = 3

Step-by-step explanation:

The area of a square is the side lenght squared, and 9² is 81.

The side lengh can be found by taking the square root of the area. √9 = 3

5 0
3 years ago
Manuel hizo un viaje en el coche, en el cual consumió 20 litros de gasolina. El trayecto lo hizo en dos partes: en la primera, c
Alona [7]

Responder:

24 litros; 16 litros; 4 litros

Explicación paso a paso:

Dado que:

Gasolina consumida = 20 litros

Sea la cantidad de gasolina en el tanque = x

Primera parte del viaje = 2/3 de x

Segunda parte del viaje = 1/2 de (x - 2x / 3)

Cantidad de gasolina en el tanque:

2x / 3 + 1/2 (x - 2x / 3) = 20

Solución para x

2x / 3 + x / 2 - x / 3 = 20

(4x + 3x - 2x) / 6 = 20

5 veces / 6 = 20

5 veces = 20 * 6

5 veces = 120

x = 120/5

x = 24

Cantidad de gasolina en el tanque = 24 litros

Litros consumidos en cada etapa:

Primera parte = 2/3 de 24 = 48/3 = 16 litros

2a parte = 0.5 de (24 - 16) = 0.5 * 8 = 4 litros

3 0
3 years ago
Two buses leave Houston at the same time and travel in opposite directions. One bus averages 55 mi/h and the other bus averages
Veronika [31]
Well you can just keep adding 55 =1hr until you get to 400 the same with 45
6 0
3 years ago
F(x)=-(x+2)^2+3 put in standard form
Natasha_Volkova [10]

Answer:

F(x)=-x^2-4x-1

Step-by-step explanation:

According to PEMDAS, do the exponent part for the parentheses, sense it goes first.

F(x)= -(x^2+4x+4)+3

Then distribute the - sign

F(x)= -x^2-4x-4+3

Then you simplify

F(x)= -x^2-4x-1

8 0
2 years ago
Read 2 more answers
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