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3 years ago

What is the value of x in the equation 1/3x-2/3=18 ? –56 –52 52 56

Mathematics

2 answers:

tangare [24]3 years ago

6 0

I believe the answer is 56

MrRa [10]3 years ago

5 0

Answer:

The value of x is 56.

Step-by-step explanation:

Here, the given equation,

$\frac{1}{3}x-\frac{2}{3}=18$

$\frac{x-2}{3}=18$ ( Subtraction of fractions ),

$x-2=54$ ( Cross multiplication )

$x=56$ ( adding 2 on both sides )

Hence, the value of x in the given equation is 56.

Last option is correct.

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QUESTION 20

Elodia [21]

Answer:

B. -55

Step-by-step explanation:

La resta entre ambas funciones consiste en la sustracción de términos semejantes como demostraremos a continuación:

1) $f(x) =-2\cdot x ^{2}-6$ Dado

2) $g(x) = x+4$ Dado

3) $(f-g)(x) = (-2\cdot x^{2}-6)-(x+4)$ Definición de resta de funciones.

4) $(f-g)(x) = (-2\cdot x^{2}-6)+(-1) \cdot (x+4)$ $(-1)\cdot a = -a$

5) $(f-g)(x) = (-2\cdot x^{2}-6) + (-x-4)$ Propiedad distributiva/ $(-1)\cdot a = -a$

6) $(f-g)(x) = -2\cdot x^{2}-x+(-6-4)$ Propiedad conmutativa

7) $(f-g) (x) = -2\cdot x^{2}-x-10$ Sustracción de términos semejantes/Resultados.

A continuación, evaluamos la función resultante en $x = -5$ :

$(f-g)(-5) = -2\cdot (-5)^{2}-(-5)-10$

$(f-g)(-5) =-55$

Por ende, la respuesta correcta es B.

8 0

3 years ago

The sides of whiteboard are 1 foot by 1 foot. How many 2 inch by 2 inch Post-it notes will be needed to cover the entire whitebo

Wittaler [7]

18 post it notes are needed to cover the entire bored.

6 0

3 years ago

WZ and XR are diameters of circle C. The diagram is not drawn to scale. What is the measure of ZWX?

Inessa05 [86]

Answer:

Measure of arc ZWX is <u>230°.</u>

Step-by-step explanation:

Given:

arc WX = 50°

Now

The diameter divide a circle into two equal parts

$arc\ ZWX=arc\ ZRW+arc\ WX$

Since WZ is diameter of the circle.

$arc\ ZRW=180\°$

substituting in above equation we get

$arc\ ZWX=180\°+50\°=230\°$

Hence Measure of arc ZWX is <u>230°.</u>

7 0

3 years ago

Express f (x) = |x-5| as a piecewise defined function

mrs_skeptik [129]

If x>5......f(x)= x-5
if x <5......f (x)= -x+5

3 0

3 years ago

Find the slope of the line that would be parallel to the given original line 3x+y=10

Arturiano [62]

The answer is 3. If the lines are parallel then they would have the same slope. :)

7 0

3 years ago