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
sineoko [7]
3 years ago
15

What is the sum of 7z/x^2 - 4

Mathematics
1 answer:
baherus [9]3 years ago
8 0

Answer:

9x-4 / (x²-4)

Step-by-step explanation:

common denominator is 'x²-4' which is (x-2)(x+2)

the term '7x' already has that denominator but 2/x+2 becomes 2(x-2)/(x²-4)

now you can add 7x to 2(x-2) which is 7x + 2x - 4 or 9x-4 and

your denominator remains as 'x²-4'

You might be interested in
You are given a fraction in simplest form. The numerator is not a zero. When you write the fraction as a decimal,it is a repeati
iren [92.7K]
It could be 3, 6,7,9 
5 0
3 years ago
it takes a hose 4 minutes to fill a rectangle 9inc long, 11inches wide and 12 inches tall, how long will it take to fill an aqua
FromTheMoon [43]
OK the problem is focusing on VOLUME and TIME.. you can set up this problem like this... (v1/t1) x (v2/t2). first we plug in what we know. the first container was filled in 4 minutes so this is our "T1". However we weren't giving the volume of the first container but we were given its dimensions. the volume formula is LxWxH. so we plug in 9x11x12 to get 1188. this is our "V1". the same concept applies for the volume of the aquarium. we have its dimensions so just plug in. 24x25x33 = 19800 this is our "V2". the thing we are left trying to find is T2. so now you can do some cross multiplying and division. (T1xV2)/V1 or (4x19800)/1188 and you get 66.67min or 1h and 6.67mins. and thats how long it took to fill the aquarium.
4 0
3 years ago
Please help! will give brainliest. click for the picture
vesna_86 [32]

Answer:

Gimme some time

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
How do I do this? Please help me
AnnyKZ [126]
You divide 46 by 5.2 and the answer should be 8.8 inches.
7 0
3 years ago
Yin wants to create figure Y′ that is similar to figure Y. Yin begins by reflecting figure Y across the y-axis.
Sholpan [36]

Answer: B) Dilate by scale factor of 2

====================================================

Explanation:

Your teacher isn't saying this directly, but I'm assuming s/he wants you to find a similar figure that isn't congruent to the original. Informally, your teacher seems to want you to find a figure that is the same shape but not the same size as the original.

If so, then any dilation will shrink or enlarge the image depending on the scale factor. So the new image will not be the same as the old one. In this case, a dilation with scale factor 2 means the new figure is twice as large (each side is twice as long). But the old image is similar to the new image. The angles keep their values and therefore we get the same shape. This is why choice B is the answer. Again this is assuming what I mentioned in the first paragraph.

Choices A, C, and D are all known as rigid transformations and they preserve the same size of the figure. Applying any of those operations will lead to the same figure (just rotated, reflected or shifted somehow). In other words, applying operations A,C, or D will have us get two congruent triangles. If two triangles are congruent, then they are automatically similar, but not vice versa. This is why we can rule out A,C, and D.

3 0
3 years ago
Read 2 more answers
Other questions:
  • How do you figure out circumference?
    14·2 answers
  • What are the excluded values of the function? y=-2/5x+40
    13·2 answers
  • Can someone help? I dont get it, where is 1/4??? i just want to know where 1/4 is.
    9·2 answers
  • 73,000,000 in scientific notation
    15·2 answers
  • How many solutions -(3 - 6b) = 6b + 5<br><br><br><br><br>​
    12·1 answer
  • Plz help me with this???
    11·2 answers
  • which equation represents a liner function that has a slope of 4/5 in the Y intercept of -6 y = -6x + 4/5 y = 4/5 x - 6y = 4/5 x
    7·2 answers
  • Put these fractions from least to greatest please!! 2/3 7/12 17/24 3/4
    5·1 answer
  • There are 9 members on a board of directors. If they must form a subcommittee of 3 members, how many different subcommittees are
    14·2 answers
  • Help will give brainlist
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!