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fgiga [73]
3 years ago
11

For what value of x is the rational expression below undefined x-4/4 x

Mathematics
2 answers:
Serga [27]3 years ago
6 0
The value of X that will make this rational expression undefined would be if X = 0.
AveGali [126]3 years ago
6 0

Answer:

x=0

Step-by-step explanation:

We have been an rational expression \frac{x-4}{4x}. We are asked to find the value of x for which our given expression is undefined.

We know that a rational expression is undefined when its denominator becomes zero. So find such value of x for our given expression, we will equate denominator with 0 and solve for c as:

4x=0

\frac{4x}{4}=\frac{0}{4}

x=0

Therefore, when x is equal to 0 our given expression will be undefined.

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5 0
3 years ago
A line in the Cartesian plane passes through the points (–2, 4) and (2, –1). What are the rise and the run of the line?
soldier1979 [14.2K]
Rise
___
run

y2-y1
____
x2-x1

-1-4
___
2--2

-5
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4
rise: -5
run: 4
7 0
3 years ago
Read 2 more answers
Find the perimeter of a circle whose diameter is 7 cm​
ivanzaharov [21]

Find the perimeter of the circle is the same as finding the circumference of the circle.

Circumference Formula: C = 2πr

Divide the diameter by 2 to find the radius.

7 / 2 = 3.5

Solve using the given values.

C = 2(3.14)(3.5)

C = 2(10.99)

C = 21.98

Therefore, the circumference (perimeter) of the circle is 21.98cm²

Best of Luck!

8 0
3 years ago
Write the equation of each line using the given information.
Scorpion4ik [409]

The equations are: A :y= -5x +11.5 B: y=4x+3 C.y=1 and D : y=4

Step-by-step explanation:

You can write the equations of the lines in the slope intercept form, y=mx+c where m is the slope of the line, and c is the y-intercept value of the line.

A.

The points ( 2 , 1 . 5 ) and ( − 5 , 36 . 5 ) both lie on the line.

finding the slope of the line using the points

slope, m=rise/run

rise=Δy=36.5-1.5=35

run=Δx=-5-2= -7

m= Δy/Δx= 35/-7 =-5

Equation of a the line, with m=-5 and point (2,1.5) in slope intercept form will be;

m=Δy/Δx = -5 =y-1.5/x-2

-5(x-2) = y-1.5

-5x+10=y-1.5

-5x+10+1.5=y

⇒⇒y= -5x +11.5 ------------ the equation of the line

B.

The slope m is given as 4 and point (3,15)

m=rise/run

m=Δy/Δx

4=y-15/x-3

4(x-3)= y-15

4x-12 = y-15

4x-12+15=y

4x+3=y

⇒⇒y=4x+3 -------------------the equation of the line in slope-intercept form

C.

The equation given is y=1, which is a horizontal line with y-intercept value as 1

The slope here is 0

Given points (3,-1) and m=0

m=Δy/Δx

0=y--1/x-3

0=y+1/x-3

0(x-3)=y+1

0=y+1

⇒⇒equation of line will be y=1

D.

Given slope of line as m=2, and the y-intercept at (0,4) then the equation will be

m=Δy/Δx

2=y-4/x-0

2(x-0)=y-4

0=y-4

y=4 ⇒⇒⇒⇒the equation of the line

Learn More

Equation of a line : brainly.com/question/8865631

Keyword : equation, line, points

#LearnwithBrainly

8 0
3 years ago
A country's population in 1993 was 127 million. In 2000 it was 132 million. Estimate the population in 2008 using the exponentia
12345 [234]
To solve the exponential growth application question we proceed as follows;
suppose the time, t between 1993 to 2000 is such that in 1993, t=0 and in 2000, t=7.
Note theta the population is in millions;
The exponential formula is given by:
f(t)=ae^(kt)
where;
f(t) =current value
a=initial value
k=constant of proportionality
t=time
substituting the values we have in our formula we get:
132=127e^(7k)
132/127=e^(7k)
introducing the natural logs we get:
ln (132/127)=7k
k=[ln(132/127)]/7
k=0.0055
Thus our formula will be:
f(t)=127e^(0.0055t)
The population in 2008 will be:
f(t)=127e^(15*0.0055)=127e^(0.0825)=137.922
Thus the population in 2008 is appropriately 138 million.

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5 0
3 years ago
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