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gtnhenbr [62]
3 years ago
15

How to solve this equation 6x^2-2x+5+2x^2-7x-11

Mathematics
1 answer:
postnew [5]3 years ago
6 0

x= \frac{9+\sqrt{273} }{16}

OR

x= \frac{9-\sqrt{273} }{16}

Step-by-step explanation:

The given equation is

6x^{2}-2x+5+2x^{2}-7x-11

<u>Step 1: Arrange the equation</u>

6x^{2}+2x^{2}-2x-7x-11+5

<u>Step 2: Simplify the equation</u>

8x^{2}-9x-6

<u>Step 3: Identify a,b,c in the equation</u>

a=8

b=-9

c=-6

<u>Step 4: Apply quadratic formula to find the possible values of x</u>

x = \frac{-b±\sqrt{b^{2}-4ac } }{2a}

x= \frac{-(-9)±\sqrt{(-9)^{2}-4(8)(-6) } }{2(8)}

x= \frac{9+\sqrt{273} }{16}

OR

x= \frac{9-\sqrt{273} }{16}

Keyword: Equation

Learn more about equations at

  • brainly.com/question/4460262
  • brainly.com/question/8955867

#LearnwithBrainly

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65000÷9330
Nataly [62]

Step-by-step explanation:

1.answer is 6.9667738478

2 answer is 42.872454448

3answer is 14.1339764202

4answer is 0.0857449089.

8 0
3 years ago
Point P' is the image of P(3,5) under a reflection across the y-axis.
Kryger [21]

Answer:

(-3,5)

Step-by-step explanation:

In reflections the x axis is the opposite only

8 0
3 years ago
A.) If m 1 = 3x - 7, find x.
aleksley [76]

Answer:

x = 25

Step-by-step explanation:

Angle 1 and the angle opposite from Angle 1 (the angle that's 68°) are vertical angles.

What are vertical angles, you ask?

According to the Oxford dictionary, vertical angles are each of the pairs of opposite angles made by two intersecting lines.

For example, take the letter X. The letter X has two lines that intersect to form 4 angles. The top and bottom angles are a pair of vertical angles. So are the left and right angles.

Vertical angles are always congruent.

(This is VERY important to know! It will help you solve many types of geometry problems!)

m1 is 3x - 7. Because Angle 1 and the angle that's 68° are vertical angles, that means they are equal to each other.

Therefore: 3x - 7 = 68.

Now, you can solve for x to get x = 25.

Hope this helps!

3 0
3 years ago
Whats 0.018 as a fraction in its simplest form
GaryK [48]
0.018 will be 18/1000 = 9/500
5 0
3 years ago
A party rental company has chairs and tables for rent. The total cost to rent 5 chairs and
Alona [7]

Answer:

1 Chair= $1.25     1 table= $8.25

Step-by-step explanation:

5c+3t=31

2c+6t= 52

-2(5c+3t=31)

-10c-6t=-62

+

2c+6t=52

= -8c=-10

/-8      /-8

c= 1.25 or 1 1/4

2c+6t=52

2(1.25)+6t=52

2.5+6t=52

-2.5        -2.5

6t= 49.5

/6      /6

t= 8 1/4

5 0
3 years ago
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