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oksano4ka [1.4K]
4 years ago
5

Determine whether the statement is always, sometimes, or never true:

Mathematics
1 answer:
Rzqust [24]4 years ago
8 0

Answer:

The statement 'A quadratic function with real coefficients has real roots' is some times true and some times false.

Step-by-step explanation:

The quadratic function in the form ax² + bx + c = 0, has real roots when the discriminant, given by D = b² - 4ac is greater than or equal to zero.

And the equation has imaginary roots when D = b² - 4ac is less than zero.

So, even a quadratic equation has real coefficients can have non-real roots depending on the value of the discriminant.  

Hence, the statement 'A quadratic function with real coefficients has real roots' is some times true and some times false. (Answer)

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Tell whether the angles are complementary or supplementary.
igomit [66]

Answer:

complementary

Step-by-step explanation:

The total angle is a right angle. Complementary angles are angles that add up to 90 degrees. Right angles are 90 degrees so the answer is complementary.

6 0
3 years ago
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Which of the following expressions is equivalent to (–7)5? A. –7 • –7 • –7 • –7 • –7 B. –7 • 5 C. (–7) • 7 • (–7) • 7 • –7 D. 5
abruzzese [7]

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Step-by-step explanation:

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D .,,;:.,))(://.,(;:,,(;
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3 years ago
Find the 9th term of the geometric sequence whose common ratio is 1/2 and whose first term is 4.
ArbitrLikvidat [17]

Answer:

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5 0
3 years ago
X+4/4=x/x-2<br> A:{-4,2} <br> B:{-2,4}<br> C:{}
Andreyy89

Answer:

<u>The correct answer is B. {-2,4}</u>

Step-by-step explanation:

Let's solve for x, this way:

x + 4/4 = x /x -2

(x + 4) * ((x - 2) = 4 * x

x² - 2x + 4x -8 = 4x

x² - 2x + 4x -8 - 4x = 0

x² - 2x  -8 = 0

(x - 4) * (x +2) = 0

x - 4 = 0

x + 2 = 0

x₁ = 4

x₂ = - 2

<u>The correct answer is B. {-2,4}</u>

3 0
3 years ago
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