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Allushta [10]
3 years ago
13

What is the result of 8(x - y)? The value for x is -5 and y is -2

Mathematics
2 answers:
Rashid [163]3 years ago
7 0

Answer:

8(-5 - -2) = 24. Inside the parantheses is 3. Then you'd multiply 8, which is 24

Step-by-step explanation:

Digiron [165]3 years ago
7 0

Answer:

-24

Step-by-step explanation:

I got my answer by plugging in the value of the variables into the equation:

8(x - y)

8((-5) - (-2))

8(-3)

-24

I hope this helps! :)

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What are the roots to this quadratic equation?
myrzilka [38]
16x^2=9
x^2=9/18
x=sqrt(9/16)
x=3/4,-3/4
so the root of the quadratic equation are 3/4 and -3/4 
5 0
3 years ago
TEN POINTS:
neonofarm [45]

Answer:

81/16 = 5 1/16

Step-by-step explanation:

-4(square root of x) -3 = -12

Add 3 to both sides

-4(square root of x) = -12 +3 = -9

Divide both sides by -4

(square root of x) = -9/-4

-/- equals +

(square root of x) = 9/4

Square both sides to cancel the square root

x = (9/4)^2 = 81/16 = 5 1/16

3 0
3 years ago
If 3(2x-4)=-36 ,the value of x is
nikklg [1K]

Answer:

x = -4

Step-by-step explanation:

8 0
3 years ago
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De acuerdo con la siguiente función f(x)=-3x+8, ¿cuál es el punto de intersección de su grafica con el eje y?
Ket [755]

Answer:

El punto de intersección con el eje “y” será (0 ; 8).

Step-by-step explanation:

En este caso la función es f(x)= -3*x + 8, o lo que es lo mismo, y= -3*x + 8

Para encontrar la intersección en y, se debe sustituir a la variable x por 0 por en la función. Una vez hecha la sustitución, es posible resolver la ecuación para encontrar el valor de y.

En este caso:

y= -3*0 + 8

Resolviendo:

y= 0 + 8

y= 8

Otra forma de resolverlo es, siendo la función f(x)= m*x + b (donde m es la pendiente y b la ordenada al origen), el valor b es el punto donde una recta cruza el eje y. En este caso la ordenada al origen tiene un valor de 8.

Entonces <u><em>el punto de intersección con el eje “y” será (0 ; 8).</em></u>

4 0
3 years ago
HELP ASAP! 70 POINTS
givi [52]

Answer:  f(x) and g(x) are inverses of each other

<u>Step-by-step explanation:</u>

To find the inverse of a function, swap the x's and y's and then solve for "y"

f(x) = 5x + 2

 y  = 5x + 2

Swap:

     x = 5y + 2

<u>    -2 </u>   <u>      - 2 </u>

x - 2 = 5y

<u>÷5     </u> <u>÷5  </u>    

\dfrac{x-2}{5}=y

****************************************************************

g(x)=\dfrac{x-2}{5}\\\\y=\dfrac{x-2}{5}\\\\\text{Swap:}\\x=\dfrac{y-2}{5}\\\\\\(5)x=\dfrac{y-2}{5}(5)\\\\\\5x=y-2\\\\5x+2=y

5 0
4 years ago
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