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Paul [167]
2 years ago
13

What is the domain for the function below? Х 1 3 5 7 Y 2 4 6 8

Mathematics
1 answer:
erma4kov [3.2K]2 years ago
3 0
X is the the answerrrr
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How many roots does this has?<br>x^2+(2√5x)+2x=-10​<br>find Discriminant
Alexxandr [17]

Given:

The equation is

x^2+(2\sqrt{5})+2x=-10

To find:

The number of roots and discriminant of the given equation.

Solution:

We have,

x^2+(2\sqrt{5})x+2x=-10

The highest degree of given equation is 2. So, the number of roots is also 2.

It can be written as

x^2+(2\sqrt{5}+2)x+10=0

Here, a=1, b=(2\sqrt{5}+2), c=10.

Discriminant of the given equation is

D=b^2-4ac

D=(2\sqrt{5}+2)^2-4(1)(10)

D=20+8\sqrt{5}+4-40

D=8\sqrt{5}-16

D\approx 1.89>0

Since discriminant is 8\sqrt{5}-16\approx 1.89, which is greater than 0, therefore, the given equation has two distinct real roots.

3 0
2 years ago
Solve for x: 8^x = (2^7)(4^9).
8_murik_8 [283]

Answer:

C. x = 25/3

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Logan and three friends went out to dinner. The total bill came to $74.40. They decide to split the bill equally between them. H
olya-2409 [2.1K]
74.40/3 friends= 24.80 for each friend. Simply division, easy to do on a calculator if you are allowed one. 
6 0
3 years ago
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PLEASE HELP AND SHOW ALL STEPS
Alja [10]

Combining the like terms, the simplified polynomials are given as follows:

a) 4x² - 14x + 17

b) -5x² - 20x + 8

<h3>How are polynomials simplified?</h3>

Polynomials are simplified combining the like terms, that is, adding these numbers with the same variable.

Item a:

4(x - 2)(x + 1) - 5(2x - 5)

Applying the distributive property:

4(x² - x - 2) - 10x + 25

4x² - 4x - 8 - 10x + 25

Combining the like terms:

4x² - 4x - 10x - 8 + 25

4x² - 14x + 17

Item b:

-5(x + 2)² + 28

-5(x² + 4x + 4) + 28

-5x² - 20x - 20 + 28

-5x² - 20x + 8

More can be learned about the simplification of polynomials at brainly.com/question/24450834

#SPJ1

4 0
1 year ago
Chad lives in California and makes $59,500 a year. If the median annual income is $61,021 in California and $50,233 in the Unite
sammy [17]
<span>Yes, Chad is likely to qualify, because his yearly income is below the median annual income of California.

</span>
4 0
3 years ago
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