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alexandr402 [8]
3 years ago
10

If one zeroes of the polynomial f(x) = 4x² - 8kx + 8x -9 is negative of other,

Mathematics
1 answer:
larisa86 [58]3 years ago
3 0

Answer:

-1 and -2

Step-by-step explanation:

f(x) = 4x² − 8kx + 8x −9

f(x) = 4x² − 8(k−1)x − 9

If one root of f(x) is the opposite of the other, then f(x) must be a difference of squares, which means -8(k−1) = 0.

-8(k−1) = 0

k = 1

Therefore, the other polynomial is:

x² + 3x + 2

(x + 1) (x + 2)

The zeros are -1 and -2.

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I found this proof by induction that all people in canada are the same height, i was wondering what is the incorrect step?
frosja888 [35]

The incorrect step in the induction that all people in Canada are the same height is; Step 9

<h3>How to prove Mathematical Induction?</h3>

The principle of mathematical induction as follows:

For example, we have a set of natural numbers. Now, suppose that 1 is in the set. Now, we assume that anytime n is in the set, n + 1 is also in the set. Therefore we can say that every natural number is in the set.

The wrong step in the given mathematical Induction is Step 9. This is because;

We might not be to see anyone else in the arbitrary group G other than groups P or Q!

Recall that G is a group of k + 1 people. Thus, provided that k > 1, k + 1 > 2 and that a third person R in G does not exist, then the rest of the proof will work.

The steps above proves that;

S(k) = S(k + 1), for every k > 1.

Thus, we can also say that if S(2) is true, then it equally means S(3) is true and so on till infinity.

From our induction process written so far, we have see that S(1) was true. However, our induction step in the question does not show us that that S(1) = S(2) = true.

So: Thus, from the induction I have done It shows that S(1) not imply S(2) and as a result the proof is fallacious.

Read more about Mathematical Induction at; brainly.com/question/24672369

#SPJ1

8 0
2 years ago
99 Points for correct answer!!!!!!!!!
3241004551 [841]

The equation given is:

15x - 3y = 21


Slope intercept form is:

y = mx + b


15x - 3y = 21

-15x -15x

-------------------

-3y = -15x + 21

/-3 /-3 /-3

---------------------

y = 5x -7


The answer is: y = 5x - 7


Hope I helped!


-Char

3 0
4 years ago
The Rectangular rug has side lengths of 3 and 4 feet. What is the length of the diagonal?
lesya [120]

the formula to find the diagonal would be

a^2+b^2=c^2

3^2+4^2= 9+16=25

the square root of 25 is 5

5^2=25

so your diagonal is 5 ft

7 0
3 years ago
The students at a school assembly
jekas [21]

Answer:

292

Step-by-step explanation:

73 students in 1 group

4 groups all together

73 Students times 4 groups = amount of students all together

so 73x4=292

4 0
3 years ago
Select the relations that are functions.
liraira [26]

Answer:

option A, C  and D

Step-by-step explanation:

Each relation is a function if each input has only one output

{a, 1), (6, 1), (C, 1)

This relation is a function because each input has only one output

{a, a),(a, b),(a, c)}

This relation is not a function because input 'a' has only three output

{(1, a), (2, a),(3, a)}

This relation is a function because each input has only one output

{a, a), (b, b), (C, c)}

This relation is a function because each input has only one output

7 0
3 years ago
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