Answer:
x=8
Step-by-step explanation:
Answer:
See below.
Step-by-step explanation:
(a) Because the solution led to a square root of a negative number:
x^2 -10x+40=0
x^2 - 10x = -40 Completing the square:
(x - 5)^2 - 25 = -40
(x - 5)^2 = -15
x = 5 +/-√(-15)
There is no real square root of -15.
(b) A solution was found by introducing the operator i which stands for the square root of -1.
So the solution is
= 5 +/- √(15) i.
These are called complex roots.
(c) Substituting in the original equation:
x^2 - 10 + 40:
((5 + √(-15)i)^2 - 10(5 + √(-15)i) + 40
= 25 + 10√(-15)i - 15 - 50 - 10√(-15)i + 40
= 25 - 15 - 50 + 40
= 0. So this checks out.
Now substitute 5 - √(-15)i
= 25 - 10√(-15)i - 15 - 50 + 10√(-15)i + 40
= 25 - 15 - 50 + 40
= 0. This checks out also.
First figure out how many people are 1/4 of 84 by dividing 84 by 4 =21. Then multiply 21 by 3 to figure out how many people are 3/4 of 84 =63. 63 people guessed incorrectly and 21 people guessed correctly:)
You have to find the slope and where it intercepts at
The values of x and y are 2 and 0, respectively
The complete question is given below:-
−−→AB=(xy) a line is given in the question from the image given in the question What values should x and y take?
<h3>How do determine the value of x?</h3>
A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
From the graph, we have the following highlights:
Point A is at:
A = 2
The point B is located at:
B = 0
The coordinate (x,y) is represented as:
(x,y) = (A,B)
So, we have:
(x,y) = (2,0)
Hence, the values of x and y are 2 and 0, respectively
Read more about coordinate points at:
brainly.com/question/17206319
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