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Serjik [45]
2 years ago
5

What is the sum? 3/x +4/x^2

Mathematics
1 answer:
Karo-lina-s [1.5K]2 years ago
8 0

Answer:

\frac{3x + 4 }{x^{2}}

Step-by-step explanation:

\frac{3}{x}+ \frac{4}{x^{2}} = \frac{3*x}{x*x} + \frac{4}{x^{2}}

          = \frac{3x}{x^{2}} + \frac{4}{x^{2}}\\\\\\=\frac{3x + 4 }{x^{2}}

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The sum of two numbers is 33. Their difference is 23. Find the numbers.
Ipatiy [6.2K]

Answer: The numbers are 28 and 5

Step-by-step explanation: The question gives a set of clues. In the first instance, the addition of two numbers equals 33. Let us assume the two numbers are A and B. What that means is that

A + B = 33.

We shall call this equation 1.

The other clue is given as “their difference is 23.” This can be expressed as

A - B = 23.

We shall call this equation 2.

Now we have a pair of simultaneous equations as follows

A + B = 33 —————-(1)

A - B = 23 —————-(2)

We shall use the substitution method

From equation (1), if we make A the subject of the equation we shall move B to the other side and we’ll have

A = 33 - B

Substitute for the value of A in equation (2)

A - B = 23 now becomes

(33 - B) - B = 23

33 - B - B = 23

33 - 2B = 23

By collecting like terms we now have 33 - 23 = 2B

(Remember that when a positive value crosses to the other side of an equation, it becomes negative, and vice versa)

33 - 23 = 2B

10 = 2B

Divide both sides of the equation by 2

5 = B

If we calculate B as 5

We can substitute for this value into equation 1, which is

A + B = 33

A + 5 = 33

Subtract 5 from both sides of the equation

A + 5 - 5 = 33 - 5

A = 28.

Therefore the numbers are 28 and 5.

8 0
3 years ago
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Radda [10]
This is what the diagram is saying
(-4)+(-9)= -13
6 0
2 years ago
What is the square root of -1?
Alchen [17]

Answer: √−1=i.

Step-by-step explanation: When we say that the square root of a negative number "doesn't exist", we mean that there is no real number solution. However, if we consider complex numbers, we then get a solution to √−1=i.

4 0
2 years ago
Read 2 more answers
In the year 2000, there were 5,000 people living in the town of Clairmont. By 2010, the population had grown to 5,600. What is t
kiruha [24]
I believe the answer is c ,BECAUSE... to find the change you take 5000 multiply it by the numbers that if aded would equal 5600 and 5000 times .12= 600, 5000 +600= 5600 hence the number of population in 2010.
 hope I helped 
6 0
3 years ago
80,+84, +82, +79, +72, +97, +89, +97, +88, +79, +86, +90, +87 =
klemol [59]

Answer:

1110

Step-by-step explanation:

Coz I solved it

4 0
3 years ago
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