03.11.2022

is the solution shown below correct?
Explain. 9x+2=8X+6x

. 5

Faq

Mathematics
Step-by-step answer
P Answered by PhD

Solution is not correct.

Step-by-step explanation:

Given question is incomplete; Here is the complete question.

Is the solution shown in the attachment correct ?

9x + 2 = 8x² + 6x

We have to solve this equation with the help of quadratic formula,

-8x² + 9x + 2 = 6x

-8x² + 9x - 6x + 2 = 0

-8x² + 3x + 2 = 0

Quadratic formula of a standard quadratic equation (ax² + bx + c = 0) is,

x = \frac{-b\pm\sqrt{b^{2}-4ac}}{2a}

By comparing our equation with the standard quadratic equation,

a = -8

b = 3

c = 2

By substituting the values of a, b and c in the quadratic formula,

x = \frac{-3\pm\sqrt{(3)^{2}-4(-8)(2)}}{2(-8)}

x  = \frac{-3\pm\sqrt{9+64} }{-16}

x  = \frac{9\pm\sqrt{73}}{16}

Therefore, the given solution is not correct.


Is the solution shown below correct? Explain.

9x+2=8X+6x
–8x² + 3x +2=0
-3+ (3) - (4)(-8)(2)
3
X =
Mathematics
Step-by-step answer
P Answered by PhD

Solution is not correct.

Step-by-step explanation:

Given question is incomplete; Here is the complete question.

Is the solution shown in the attachment correct ?

9x + 2 = 8x² + 6x

We have to solve this equation with the help of quadratic formula,

-8x² + 9x + 2 = 6x

-8x² + 9x - 6x + 2 = 0

-8x² + 3x + 2 = 0

Quadratic formula of a standard quadratic equation (ax² + bx + c = 0) is,

x = \frac{-b\pm\sqrt{b^{2}-4ac}}{2a}

By comparing our equation with the standard quadratic equation,

a = -8

b = 3

c = 2

By substituting the values of a, b and c in the quadratic formula,

x = \frac{-3\pm\sqrt{(3)^{2}-4(-8)(2)}}{2(-8)}

x  = \frac{-3\pm\sqrt{9+64} }{-16}

x  = \frac{9\pm\sqrt{73}}{16}

Therefore, the given solution is not correct.


Is the solution shown below correct? Explain.

9x+2=8X+6x
–8x² + 3x +2=0
-3+ (3) - (4)(-8)(2)
3
X =
Mathematics
Step-by-step answer
P Answered by Specialist

the answer is not correct

there is a sign error under the radical

it should be 3^2 - 4(-8)(2) = sqrt(73) not sqrt(55i)

Step-by-step explanation:

Mathematics
Step-by-step answer
P Answered by Specialist

the answer is not correct

there is a sign error under the radical

it should be 3^2 - 4(-8)(2) = sqrt(73) not sqrt(55i)

Step-by-step explanation:

Mathematics
Step-by-step answer
P Answered by PhD

For 1 flavor there are 9 topping

Therefore, for 5 different flavors there will be 5*9 choices

No of choices= 5*9

=45 

Mathematics
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
Mathematics
Step-by-step answer
P Answered by PhD

For every 8 cars there are 7 trucks

Therefore,

Cars:Truck=8:7

Answer is B)8:7

Mathematics
Step-by-step answer
P Answered by PhD

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

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