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Vlada [557]
3 years ago
9

Simplify x^2-9/x^2+x-12

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
3 0

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

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What is X over 8 =9
Liula [17]

Answer: x = 72

Step-by-step explanation: Although the problem is saying "X over 8", this really signifies that the <em>x</em> is being divided by 8 which is what a fraction is, numerator divided by a denominator.

Let's first undo what has been done. Since our variable is being divided by 8, we'll undo that by multiplying by 8 on both sides. It's important to remember, whatever you do on one side,

you <u><em>must</em></u> do to the other side.

If you look now, the 8 in the numerator and the 8 in the denominator will divide out and it will leave us with our variable which is <em>x</em>. Working on the other side now, 9 x 8 is equal to 72 so <em>x = 72</em> is our answer.

We can check our answer by plugging a 72 back into the original equation. So we have 72/8 = 9 which is a true statement

so our answer is correct.

4 0
3 years ago
The sum of the angles in a hexagon is 720°.
qwelly [4]

Given:

The sum of the angles in a hexagon is 720°.

m\angle A=90^\circ,m\angle B=126.87^\circ,m\angle C=(3x)^\circ,m\angle D=90^\circ, m\angle E=143.13^\circ, m\angle F=143.13^\circ.

To find:

(a) Equation to solve the value of x.

(b) The value of x.

(c) The measure of angle C.

Solution:

(a)

We have,

m\angle A=90^\circ,m\angle B=126.87^\circ,m\angle C=(3x)^\circ,m\angle D=90^\circ, m\angle E=143.13^\circ, m\angle F=143.13^\circ.

The sum of the angles in a hexagon is 720°.

m\angle A+m\angle B+m\angle C+m\angle D+m\angle E+m\angle F =270^\circ

90^\circ+126.87^\circ+(3x)^\circ+90^\circ+143.13^\circ+143.13^\circ =270^\circ

90+126.87+(3x)+90+143.13+143.13 =720

Therefore, the required equation is 90+126.87+(3x)+90+143.13+143.13 =720.

(b)

On solving the above equation, we get

593.13+3x =720

3x =720-593.13

3x =126.87

Divide both sides by 3.

x =\dfrac{126.87}{3}

x =42.29

Therefore, the value of x is 42.29.

(c)

We need to find the measure of angle C.

m\angle C=(3x)^\circ

m\angle C=(3\times 42.29)^\circ

m\angle C=126.87^\circ

Therefore, the measure of angle C is 126.87 degrees.

7 0
3 years ago
What is the approximate area of the shaded sector in the circle shown below?
Gnesinka [82]

Answer:

13.1 in^2

Step-by-step explanation:

apex!!!

8 0
3 years ago
Read 2 more answers
Sketch the graph of each function
jenyasd209 [6]

Answer:

See diagram

Step-by-step explanation:

First, consider the graph of the parent function y=\cos x. This function has the period 2\pi.

Rewrite the function y=2(1+\cos (x-\frac{\pi}{2})) as y=2+2\cos (x-\frac{\pi}{2}). The graph of this function has the same period of 2\pi, is twice streched and translated \frac{\pi}{2} units to the right and 2 units up graph of the parent function (see diagram).

4 0
3 years ago
Read 2 more answers
-7x+4= 7x+4<br> what is the answer.
Helga [31]

Answer:

x=0

Step-by-step explanation:

use math-way it helps

5 0
2 years ago
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