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Tomtit [17]
3 years ago
15

Démontrer que x²-4x+5=(x-2)²+1 ; En déduire que x²-4x+5=0 n'a pas de solution

Mathematics
1 answer:
iragen [17]3 years ago
8 0
1st: toute valeur de x rend I'<span>équation vraie
tous les nombres r</span><span>éels

2nd: r</span><span>ésoudre l'équation pour x en trouvant a, b et c du quadratique puis en appliquant la formule quadratique
x = 2 ± i</span>
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Can someone please help
Sloan [31]

Answer:

41

Step-by-step explanation:

an = a1 + (n-1)d

a_n = the nᵗʰ term in the sequence = 10

a_1 = the first term in the sequence = 5

d = the common difference between terms = 4

a10 = 5 + (10-1)4

a10 = 5 + (9)4

a10 = 5 + 36

a10 = 41

7 0
2 years ago
What is the slope of the line y = 5x? Just write the<br> number for your answer.
vitfil [10]

Answer:

5

General Formulas and Concepts:

<u>Algebra I</u>

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

y = 5x

<u>Step 2: Break Function</u>

<em>Identify Parts</em>

Slope <em>m</em> = 5

y-intercept <em>b</em> = 0

5 0
3 years ago
An isoceles triangle measures 30°. which other angles could be on that isoceles triangle​
hoa [83]

Answer: 75 degrees on the other two angles because all of the angles added together should be 180. So if you do 180-30 then divide that by 2 you get the other two angles.

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
Let f(x)= x^2 -2x+6 find f(-1)
Leokris [45]

Answer:

Step-by-step explanation:

f(x) = x^2 - 2x + 6

to find f(-1), we sub in -1 for every x

f(-1) = (-1^2) - 2(-1) + 6

f(-1) = 1 + 2 + 6

f(-1) = 9 <=======

8 0
3 years ago
Express the indicated degree of likelihood as a probability value.Your mother did not die two years before you were born.
Sergeeva-Olga [200]

Answer: 1

Step-by-step explanation:

In reality , the child will not born, if mother die before his conception and keeping in mind that the pregnancy takes about 9 months after conception.

Now according to the statement "Your mother could not have died two years before you were born." is always true and therefore the probability equals 1 .

6 0
4 years ago
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