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8090 [49]
3 years ago
5

What is the domain of this function?

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
7 0
Only the third one make sense I believe
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Enter the correct answer in the box. solve the equation x2 − 16x 54 = 0 by completing the square. fill in the values of a and b
poizon [28]

The roots of the given polynomials exist  $x=8+\sqrt{10}$, and $x=8-\sqrt{10}$.

<h3>What is the formula of the quadratic equation?</h3>

For a quadratic equation of the form $a x^{2}+b x+c=0$ the solutions are

$x_{1,2}=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Therefore by using the formula we have

$x^{2}-16 x+54=0$$

Let, a = 1, b = -16 and c = 54

Substitute the values in the above equation, and we get

$x_{1,2}=\frac{-(-16) \pm \sqrt{(-16)^{2}-4 \cdot 1 \cdot 54}}{2 \cdot 1}$$

simplifying the equation, we get

$&x_{1,2}=\frac{-(-16) \pm 2 \sqrt{10}}{2 \cdot 1} \\

$&x_{1}=\frac{-(-16)+2 \sqrt{10}}{2 \cdot 1}, x_{2}=\frac{-(-16)-2 \sqrt{10}}{2 \cdot 1} \\

$&x=8+\sqrt{10}, x=8-\sqrt{10}

Therefore, the roots of the given polynomials are $x=8+\sqrt{10}$, and

$x=8-\sqrt{10}$.

To learn more about quadratic equations refer to:

brainly.com/question/1214333

#SPJ4

3 0
1 year ago
Read 2 more answers
Jan’s age is 3 years less than twice Tritt’s age. The sum of their ages is 30. Write an equation that could be used to find the
musickatia [10]

Answer:

x=2y-3

Step-by-step explanation:

x=Jan's age

y=Tritt's age

4 0
3 years ago
Hdhdhdbsnsjidhdbendx
nlexa [21]

Answer:

hdhwvejrfgnwruge. love that . ask a question though id love to help!

Step-by-step explanation:

you got this buddy lol

5 0
3 years ago
Read 2 more answers
The factored form of the expression -25t - 175 is
tensa zangetsu [6.8K]

Answer:

-25(t +7)

Step-by-step explanation:

-25t - 175

Factor out -25

-25 *t  +-25* 7

-25(t +7)

3 0
3 years ago
Please help -2=3x/5+1
Shalnov [3]

Answer:

X = -5

Step-by-step explanation:

Subtract one from both sides

- 3 = 3x / 5

multiply by 5 to remove fraction

-15 = 3x

divide by 3

x = -5

6 0
3 years ago
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