MATHEMATICS HIGH SCHOOL

Solve.
x/x-2+x-1/x+1=-1

Answers

Answer 1
Answer:

The values of x are -4and 1 .

Given,

x/x-2 + x-1/x+1 = -1

To get the solution,

x≠2 and x≠1.

Now,

x/(x-2)+(x-1)(x+1) = -1

Solving the numerator and denominator,

==> (x²+x-(x²-x-2x+2))/(x²-x-2)=-1

==>4x-2=-x²+x+2

==>x²+3x-4=0

==>(x+4)(x-1)=0

Sol ={-4,1} which are different of the excluded values.

Thus the values of x are -4 and 1 .

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Answer 2
Answer: Hello,

We suppose x≠2 and x≠1.

x/(x-2)+(x-1)(x+1)=-1
==> (x²+x-(x²-x-2x+2))/(x²-x-2)=-1
==>4x-2=-x²+x+2
==>x²+3x-4=0
==>(x+4)(x-1)=0
Sol ={-4,1} which are different of the excluded values.

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Which is smaller 0.9, 75% or 4 fifths?

Answers

In that case, try to bring all numbers into one format.

75% = 0.75

4/5 = 0.8

So, 75% is the smallest whereas 0.9 is largest
Which is smaller 0.9, 75% or 4 fifths?
75%

Cos theta = -5/6
180° <0<270°

Answers

Answer:choccy milk  solve all  yo problems

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According to the Rational Root Theorem, which could be a factor of the polynomial f(x) = 3x3 – 5x2 – 12x + 20?2x + 1
2x – 1
3x + 5
3x – 5

Answers

Answer:

D. 3x-5

Step-by-step explanation:

We have been given an polynomial f(x)=3x^3-5x^2-12x+20 and we are asked to choose the correct option that represents the factor of our given polynomial according to the rational root theorem.

First of all we will factor our polynomial.

f(x)=x^2(3x-5)-4(3x-5)

f(x)=(x^2-4)(3x-5)

f(x)=(x+2)(x-2)(3x-5)

Therefore, (3x-5) will be a factor of our given polynomial and option D is the correct choice.

Answer:

D.) 3x – 5

Step-by-step explanation:

Lori works as a cartoonist for a teen magazine.The time she spent sketching is given by the equation m=12s, where mis the number of minutes and s is the number of sketches. If lori made 3/4 of a sketch, she spent minutes sketching

Answers

Answer:

Lori spends 9 minutes on sketching (3)/(4)th of a sketch.

Step-by-step explanation:

Given equation:

m=12\ s

where m\rightarrow number of minutes Lori spends on sketching

and s\rightarrow number of sketches Lori makes.

We need to calculate the time spent by Lori in sketching (3)/(4) of a sketch.

So we know the value of  s=(3)/(4) as s represents number of sketches and in this situation Lori has sketched only a fraction of a painting.

So we plugin s=(3)/(4) in the equation and calculate m which is time spent by Lori sketching (3)/(4)th of a sketch.

m=12\ (3)/(4)

m=(36)/(4)

∴ m=9 minutes (Answer)

∴ Lori spends 9 minutes on sketching (3)/(4)th of a sketch.

If the light ray hits a mirror at a 40 degree angle what angle will the ray of light be reflected

Answers

The angle will also be 40 degrees because the reflected ray has the same angle as the incident ray.

What is the reflection of light?

When light rays reflect off a surface, migrate from one transparent medium to another, or travel through a medium whose composition is constantly changing, they change direction.

The angle of the reflected ray is equal to the angle of the incident beam when reflected off a flat surface, according to the law of reflection. (By convention, all angles in geometrical optics are measured with respect to the surface's normal, i.e. a line perpendicular to the surface.)

The reflected ray always falls in the plane specified by the incident light and the surface normal. To comprehend the pictures formed by planar and curved mirrors, the law of reflection can be applied.

As per the question, the light ray hits a mirror at a 40-degree angle.

Thus, the angle will also be 40 degrees because the reflected ray has the same angle as the incident ray.

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It will be also 40 degrees as reflected ray has an equal angle to incident ray. 

Bret’s uncle owns a square of land that is 10 miles long on each side. is that the same as 10 mi2?

Answers

No it's not the same.

First of all, miles is used for length while mi2 is used for Area.

Second, if the length of each side is 10 miles , the total area would be 10 x 10 = 100 mi2

hope this helps
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