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Firlakuza [10]
2 years ago
11

Solve for x. Round your answer to the nearest hundredth. 2x^2-6x+3=0

Mathematics
1 answer:
pogonyaev2 years ago
7 0

Step-by-step explanation:

2 {x}^{2}  - 6x + 3 = 0 \\ x =  \frac{ - b± \sqrt{ {b}^{2}  - 4ac} }{2a}  \\ x =  \frac{6± \sqrt{12} }{4}  \\ x = 2.4  \: or \: 0.6

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A point with a positive x-coordinate and a negative y-coordinate is reflected over the y-axis.
Luden [163]
The x-coordinate is negative, and the y-coordinate is negative.

This is because the y-axis is vertical, so reflecting across it means you will change the sign of the x-value, and the sign of the y-value will stay constant. Since we start off with a positive x and negative y, we will end up with a negative x and negative y.
4 0
2 years ago
I have a problem -3x-7=-13. When isolating x I divide x by -3 then divide -13 by -3 correct?
rosijanka [135]

Hello!

no, that is not the correct way to isolate x. you were somewhat on the right track however.

here's the correct way:

add 7 to both sides to get -3x = -6

then divide both sides by -3 to get x = 2

I hope this helps, and have a nice day!

6 0
3 years ago
3/4 over 3 1/4 simplified is?
Sergio039 [100]

Answer:

Convert  

3

1

4

to an improper fraction.

A mixed number is an addition of its whole and fractional parts.

3

+

1

4

−

1

3

4

Add  

3

and  

1

4

To write  

3

as a fraction with a common denominator, multiply by  

4

4

.

3

⋅

4

4

+

1

4

−

1

3

4

Combine  

3

and  

4

4

.

3

⋅

4

4

+

1

4

−

1

3

4

Combine the numerators over the common denominator.

3

⋅

4

+

1

4

−

1

3

4

Simplify the numerator.  

Multiply  

3

by  

4

.

12

+

1

4

−

1

3

4

Add  

12

and  

1

.

13

4

−

1

3

4

Convert  

1

3

4

to an improper fraction.

A mixed number is an addition of its whole and fractional parts.

13

4

−

(

1

+

3

4

)

Add  

1

and  

3

4

.

13

4

−

7

4

Combine the numerators over the common denominator.

13

−

7

4

Subtract  

7

from  

13

.

6

4

Cancel the common factor of  

6

and  

4

.

Factor  

2

out of  

6

.

2

(

3

)

4

Cancel the common factors.

Factor  

2

out of  

4

.

2

⋅

3

2

⋅

2

Cancel the common factor.

2

⋅

3

2

⋅

2

Rewrite the expression.

3

2

The result can be shown in multiple forms.

Exact Form:

3

2

Decimal Form:

1.5

Mixed Number Form:

1

1

2

Step-by-step explanation:

6 0
3 years ago
There are 18 cans of peas in a case. Each can of peas is 12 ounces. If a case of peas costs $14.22, what is the unit price per c
Elan Coil [88]

Okay doll so this is how you do it.

The 12 ounces doesn't matter. Its irrelevant.

You divide 14.22 by 18.

And that's all there is to it.

The answer is C. $0.79

3 0
3 years ago
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Find the possible value or values of r in the quadratic equation r^2-7r-8=0
tester [92]
I hope this helps you

6 0
3 years ago
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