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True [87]
4 years ago
8

Which statement about numbers on the vertical number line is true?

Mathematics
2 answers:
Oksana_A [137]4 years ago
7 0
The answer is B, hope this help Faux, trust me bro :)
wel4 years ago
4 0
The answer is B. hope it helped
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Discuss all possible scenarios for the Discriminant when solving a Quadratic equation using Quadratic formula? Give an example.
a_sh-v [17]

Explanation:

For a quadratic equation in standard form with real coefficients:

  ax^2+bx+c=0

The quadratic formula giving its solutions is ...

  x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

The quantity under the radical is called the discriminant. If we let d represent it, then ...

  d = b²-4ac

and there are three possibilities:

  1. d < 0. The solutions involve the square root of a negative number, so both are complex. They are conjugates of each other.
  2. d = 0. There is one real solution. It has multiplicity 2.
  3. d > 0. There are two distinct real roots.

If the coefficients of the quadratic are rational, the roots will be irrational if and only if d is not a perfect square.

_____

The above formula still applies when coefficients are complex or irrational (or both). In the case of complex coefficients, the description of the number of roots is accurate, but their description as real or complex may not apply.

_____

<u>Examples</u>:

  (x -1)² +1 = 0 = x² -2x +2 . . . . d = (-2)²-4(1)(2) = -4; roots are x = 1 ± i

  (x-2)² = 0 = x² -4x +4 . . . . . . d = (-4)² -4(1)(4) = 0; roots are x = 2 (twice)

  (x+3)² -4 = x² +6x +5 . . . . . . d = 6² -4(1)(5) = 16; roots are x = -5 and x = -1

3 0
4 years ago
4. Rewrite the expression using the distributive property.<br> (7•3) + (7•7)
dezoksy [38]
(7•7)+(7•7)

We can use the formula of distributive property
a(b+c)=ab+ac
So it will look like a(b+c)= (7•7)+(7•3)
A is 7, B is also 7, and C is 3. Plug those in and you get 7(7+3)

Answer: 7(7+3)

Hope this helps ʕ•ᴥ•ʔ
3 0
3 years ago
Can somebody help me with this please.​
Ksju [112]

I don't know what number 1 and number 2 mean,

3:11

4

5:-3

6:-8

You can find the answer below. Among the questions I answered correctly, I hope to adopt it at the end. Thank you. Have a nice day.

4 0
3 years ago
Which of these is an exponential parent function? OA. f(x)=2x-2 OB. f(x) = 2x C. f(x) = 2x + 3 OD. f(x) = 24x​
melomori [17]

The answer to this question is choice B

5 0
2 years ago
Let f(x) = 36x^5 − 44x^4 − 28x^3 and g(x) = 4x^2. Find f of x over g of x.
jenyasd209 [6]

Answer:

9x³ - 11x² - 7x

Step-by-step explanation:

(36x⁵ − 44x⁴ − 28x³)/4x²

(36x⁵/4x²) - (44x⁴/4x²) - (28x³/4x²)

9x³ - 11x² - 7x

3 0
3 years ago
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