1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ExtremeBDS [4]
3 years ago
13

Select the rational expression that is equivalent to the given expression below. 4/x-3

Mathematics
2 answers:
Aliun [14]3 years ago
7 0
To find the correct option we need to calculate each of the given options.
Option (1):
\frac{x+2}{x-3} /  \frac{4}{x+2} =  \frac{x+2}{x-3} *  \frac{x+2}{4} =  \frac{(x+2)^2}{4(x-3)}

Option (2):
\frac{x+2}{x-3} *  \frac{4}{x+2} =  \frac{4}{x-3}

Option (3):
\frac{x+2}{x-3} - \frac{4}{x+2} = \frac{(x+2)^2-4(x-3)}{(x-3)(x+2)}

option (4)
\frac{x+2}{x-3} + \frac{4}{x+2} = \frac{(x+2)^2+4(x-3)}{(x-3)(x+2)}


So, the correct answer is option (2)
Thepotemich [5.8K]3 years ago
7 0
The second one where there is multiplication.
You might be interested in
While visiting Wallawulla State​ Park, Joe approximated the angle of elevation to the top of a mound to be 40 degrees . After wa
katen-ka-za [31]

Answer:

Height of mound = 794 ft

Step-by-step explanation:

To illustrate the angle of elevation and distance, i have drawn it and attached below.

Now, from my diagram;

h = the height of the mound

At his first point of his trip to the foot of the mound, the angle of elevation is 40°, while the horizontal distance to the foot of the mound is "X"

So, by triangle definition,

tan(40°) = h/x

And so;

h = x tan40

h = 0.8391x  - - - - (eq 1)

At his second point of the trip to the foot of the mound, Joe is now,

"(x - 450) ft" from the foot of the mound.

Thus, his angle of elevation is 40 + 18 = 58°.

So, by triangle definition,

tan(58°) = h/(x - 450)

h = (x - 450)•(tan(58°))

h = 1.6003(x - 450)

h = 1.6003x - 720.135   - - - - -(eq2)

To get the height(h) of the mound, let's equate (eq1) to (eq2).

0.8391x = 1.6003x - 720.135

1.6003x - 0.8391x = 720.135

0.7612x = 720.135

x = 720.135/0.7612

x = 946.0523 ft

Let's put this value for x in eq (1);

h = 0.8391 x 946.0523 = 793.83 ft ≈ 794ft

4 0
3 years ago
The variables x and y are directly proportional, and y=2 when x=3. what is the value of y when x=9?
laiz [17]
X varies directly as y
x = ky
3 = 2k
k = \frac{3}{2}
 when x =9
9 = \frac{3}{2}y
\frac{18}{3} = y
∴y = 6

please mark as brainliest
8 0
3 years ago
Read 2 more answers
Finf the exact value of sin A and cos A where a = 9 and b = 10 and <c is a right angle
Katyanochek1 [597]
To solve for the longest side, the hypotenuse, you have to use the pythagorean theorem. It will be 10^2 + 9^2 = c^2. 100 + 81 =c^2. 
c^2 = 181 so c = sqrt(181).
to find sin of A do opposite/hypotenuse which gives you 9/sqrt(181)
to find cos of A do adjacent/hypotenuse which gives you 10/sqrt(181)

8 0
3 years ago
Read 2 more answers
The Gateway Arch in St. Louis can be modeled by y=-2/315(x+315) (x-315) where x and y are measured in feet. The x-axis represent
Pani-rosa [81]

Answer:

USE SOCRACTIC IT WOULD REALLY HELP

4 0
3 years ago
Which expression can you use to find 16÷45?
Serga [27]

Answer:

☆<《<em><u>HOPE</u></em><em><u> </u></em><em><u>IT</u></em><em><u> </u></em><em><u>WILL HELP YOU</u></em><em><u> </u></em><em><u>》</u></em><em><u>></u></em><em><u>☆</u></em>

Step-by-step explanation:

Exprassion is 16/45--x=0

7 0
3 years ago
Read 2 more answers
Other questions:
  • John decided to look at new and used cars. John found a used car for $15000. A new car is $25000, so what percent of thi e price
    10·1 answer
  • Solve the inequality. 5(a – 5) &gt; 25 a &lt; 30 a &gt; 30 a &gt; 5 a &gt; 10
    15·1 answer
  • the larger triangle is a dilation of the smaller triangle with a center of dilation at (2,-1). Whatbis the scale factor of the d
    5·1 answer
  • A fast typist can type 120 words in 100 seconds. At that rate, how many seconds would it take to type 258 words?
    9·2 answers
  • find the area of a circle with a radius of two either enter an exact answer in terms of pi or use 3.14 for pi and enter your ans
    14·2 answers
  • If the image of A after dilation of 3 is A'(12, -6), what is the location of A?
    9·1 answer
  • A cubical house can hold 4096m of air .find the height of the house​
    15·1 answer
  • Sec (90 -A) sinA = cot (90-A). tan( 90- A)​
    6·2 answers
  • I NEED HELP ASAP
    7·2 answers
  • A car dealer offers a 15% discount off the list price x of any car on the lot. At the same time, the manufacturer offers a 1000$
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!