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Pani-rosa [81]
3 years ago
15

Solve by finding the square roots: 3x2 - 9 = 3

Mathematics
2 answers:
inna [77]3 years ago
7 0
The answer is x = 2
A
Blizzard [7]3 years ago
3 0

Answer:

x= 2 or x= -2

Step-by-step explanation:

3x² -9= 3

+9 on both sides:

3x²= 9 +3

Simplify:

3x²= 12

Divide by 3 on both sides:

x² =4

Square root both sides:

x =  \sqrt{4}

x= 2 or x= -2

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Find the discriminant of the following quadratic equation<br> x^-5x+3=0
nika2105 [10]

The discriminant of the given quadratic equation as in the task content can be evaluated by means of the formula; D = b²-4ac and it's value is; 13.

<h3>What is the discriminant of the quadratic equation as given in the task content?</h3>

According to the task content, it follows that the quadratic equation whose discriminant is to be determined is; x²-5x+3=0.

By comparison with the standard form equation of a quadratic graph which goes thus; ax²+bx +c = 0, in which case, the determinant is given by the expression; b² - 4ac.

We can consequently evaluate the determinant of the quadratic equation in discuss as follows;

Determinant = b² -4ac = (-5)² - (4×1×3) = 25 - 12

Hence, the determinant in this case is; 13.

Read more on determinant;

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8 0
2 years ago
دائرة مركزها o فيها الوتران cd,ab اذا علمت ان النقطة n نقطة منتصف الوتر cd والنقطة m نقطة منتصف الوترab وكان om=on وطول cn=6cm
DerKrebs [107]

Step-by-step explanation:

12cm

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5 0
3 years ago
Read 2 more answers
Give work for equations following:<br><br> -x+2y&lt;-4<br> 2x+3y&gt;6<br><br> thanks sooooo much!!!!
Schach [20]

Answer: See below

Step-by-step explanation:

A) -x+2y < -4

-x+2y-2y < -4-2y

-x < -4-2y

Multiply both sides by -1 and reverse the inequality:

\left(-x\right)\left(-1\right) > -4\left(-1\right)-2y\left(-1\right)

x > 4+2y

B) 2x+3y > 6

2x+3y-3y > 6-3y

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\frac{2x}{2} > \frac{6}{2}-\frac{3y}{2}

x > \frac{6-3y}{2}\\x > 3-\frac{3y}{2}

3 0
2 years ago
(6.0x10^5)x(3.0x10^4)=? <br><br> 18x10^20 <br> 18x10^9 <br> 1.8x10^20 <br> 1.8x10^10
Leto [7]
(6.0 x 10^5) x (3.0 x 10^4) = (6 x 3) x 10^(5 + 4) = 18 x 10^9 = 1.8 x 10^10
7 0
4 years ago
Is 2/3 greater than 8/12
likoan [24]
2/3 is exactly the same as 8/12
5 0
3 years ago
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