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WITCHER [35]
4 years ago
12

I need the answer pls help!

Mathematics
1 answer:
valina [46]4 years ago
7 0

Answer:

x = ± 7

Step-by-step explanation:

Given

(2x - 1)(3x + 2) = x + 292 ← expand left side using FOIL

6x² + x - 2 = x + 292 ( subtract x from both sides )

6x² - 2 = 292 ( add 2 to both sides )

6x² = 294 ( divide both sides by 6 )

x² = 49 ( take the square root of both sides )

x = ± 7

That is x = - 7, x = 7

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2.82 is the nearest hundredth.

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4 years ago
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4 0
3 years ago
What are the solutions of x2 -2x+2=0​
sergejj [24]

Answer: x = 1 ± i

Step-by-step explanation:

Solving the quadratic equation using the quadratic formula:

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

From the question :

a = 1

b = -2

c = 2

substituting inside the formula

X = \frac{-(-2)+\sqrt{(-2)^{2}-4(1)(2) } }{2(1)}  or

\frac{-(-2) - \sqrt{2^{2}-4(1)(2) } }{2(1)}

x = \frac{2 + \sqrt{4-8} }{2} or  \frac{2 - \sqrt{4-8} }{2}

x = \frac{2 + \sqrt{-4} }{2} or \frac{2 - \sqrt{-4} }{2}

Recall ; \sqrt{-4} can be written as \sqrt{-1} X \sqrt{4}, and \sqrt{-1} = i

Substituting this

x = \frac{2+2i}{2} or \frac{2-2i}{2}

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3 0
3 years ago
In a school 30% of the teachers are math teachers. If there are 15 math teachers how many teachers are in the school?
AleksAgata [21]

Answer:

The total teachers in the school are 50.

Step-by-step explanation:

Given:

In a school math teachers are 30%.

Now, to get the total teachers in school if there are 15 math teachers.

<em>Percentage of math teachers = 30%.</em>

<em>Number of math teachers = 15.</em>

Let the total number of teachers be x.

So, according to question:

30\%\ of\ x=15

⇒\frac{30}{100}\times x=15

⇒0.30\times x=15

⇒0.30x=15

<em>Dividing both sides by 0.30 we get:</em>

⇒x=50

Therefore, the total teachers in the school are 50.

3 0
4 years ago
15. Calculator Challenge Locate the button e on your scientific calculator. e is called the natural num
katovenus [111]
The answer is A hope that helped you today
5 0
3 years ago
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