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4 years ago

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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4 years ago

Read 2 more answers

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marta [7]

Answer:

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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

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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.

Percentage of math teachers = 30%.

Number of math teachers = 15.

Let the total number of teachers be $x$ .

So, according to question:

$30\%\ of\ x=15$

⇒ $\frac{30}{100}\times x=15$

⇒ $0.30\times x=15$

⇒ $0.30x=15$

Dividing both sides by 0.30 we get:

⇒ $x=50$

Therefore, the total teachers in the school are 50.

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4 years ago

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katovenus [111]

The answer is A hope that helped you today

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3 years ago