1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
matrenka [14]
3 years ago
9

What is the solución of the equation x2-4x+1=0?

Mathematics
1 answer:
koban [17]3 years ago
6 0

Answer:

x = 2 + √3 and

x = 2 - √3

Step-by-step explanation:

Please use " ^ " to denote exponentiation:  x^2 - 4x + 1 = 0.

Here you have multiple choices of methods of solution:

quadratic formula, completing the square, graphing, and so on.

If we complete the square, then:                   x^2 - 4x + 1 = 0 becomes

                                                                       x^2 - 4x + 4 - 4 + 1 = 0, or

(x - 2)^2 = 3

Taking the square root of both sides, we get x - 2 = ±√3, so that the roots are:

x = 2 + √3 and

x = 2 - √3

You might be interested in
HELPPPPPPPPPPPPPPPPP
igomit [66]
X=3
LOM and KOL are equivalent, so the equation is 43=6x+25 :)
5 0
2 years ago
Recall that two angles are complementary if the sum of their measures is​ 90°. find the measures of two complementary angles if
maxonik [38]
If one angle is 8 times bigger than the other, the bigger angle's measure would be 8x and the smaller angle's measure would be x. 8x+x=90. This simplifies to 9x=90. To find x, you divide 9 from 90, making x=10. This means the smaller angle (Angle 2) is 10° and the bigger angle's (Angle 1) is 8 times 10, so it is 80°.
8 0
3 years ago
PLEASE HELP ASAP 35 PTS
Nadusha1986 [10]
For questions 10 it c
8 0
3 years ago
Read 2 more answers
A taxi driver had 27 fares to and from the airport last Monday. The price for a ride to the airport is $14, and the price for a
OLga [1]

Answer:

(15, 12)

Step-by-step explanation:

Let's generate two systems of equations that fit this scenario.

Number of trips to the airport = x

Number of trips from the airport = y

Total number of trips to and from the airport = 27

Thus:

x + y = 27 => equation 1.

Total price for trips to the Airport = 14*x = 14x

Total price of trips from the airport = 7*y = 7y

Total collected for the day = $294

Thus:

14x + 7y = 294 => equation 2.

Multiply equation 1 by 7, and multiply equation 2 by 1 to make both equations equivalent.

7 × x + y = 27

1 × 14x + 7y = 294

Thus:

7x + 7y = 189 => equation 3

14x + 7y = 294 => equation 4

Subtract equation 4 from equation 3

-7x = -105

Divide both sides by -7

x = 15

Substitute x = 15 in equation 1

x + y = 27

15 + y = 27

Subtract both sides by 15

y = 27 - 15

y = 12

The ordered pair would be (15, 12)

7 0
3 years ago
In a study of author productivity, a large number of authors were classified according to the number of articles they had publis
bekas [8.4K]

Answer:

Follows are the response to this question:

Step-by-step explanation:

It is the most important positive skewness of the data is the distribution.

Notes:

Another approach for Mini-tab to generate a graph from the data set is through the capability of Mini-tabs, for instance, to type 784(1) in 784 copies of its number 1, to input multiple copies of the same number. Frequency data were input with both the following attached file mini-tab directions in this workout:

7 0
2 years ago
Other questions:
  • Can somebody give me the answers to all of theseeeeee plsssss rn
    8·1 answer
  • a store sells 10 square yards of carpet installed for $275. At this price, what will 25 square yards of carpet cost?
    15·1 answer
  • Without using a calculator, fill in the blanks with two consecutive integers to complete the following inequality. ____ < squ
    10·1 answer
  • 12.) Given the following information, determine which lines, if any, are parallel. State the converse that justifies your answer
    9·1 answer
  • X^2 + 4.7^2 = 13.4^2
    14·1 answer
  • 9.42 multiplied by 6.83
    11·1 answer
  • 13 ➗ 16 equals what? please show me in long divison
    12·1 answer
  • 9_12-15-22-5_25-15-21<br>translate the code ​
    15·1 answer
  • Jason jumped 623 feet in a jumping contest. Yolanda jumped 434 feet. How much farther did Jason jump than Yolanda?
    14·2 answers
  • Based on the measures
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!