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Evgesh-ka [11]
3 years ago
15

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

so

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
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