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11Alexandr11 [23.1K]
3 years ago
5

If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?

Mathematics
1 answer:
sp2606 [1]3 years ago
7 0

Answer:

Step-by-step explanation:

A discriminate of -8 is never going to give you a real root. D is wrong

You cannot have just 1 complex root, nor can you have just 1 real root unless the discriminate is 0. A and C are both wrong for the same reason. 1 complex root is impossible. They come in pairs.

So the answer is B. You have 2 complex roots.

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alexira [117]
We have to determine the constant in the equation, which shows how Eric can calculate his profit ( y ). He sells each shirt for $4 and he has total expenses: $100 + $10 = $110. So the equation for profit is: y = 4 x - 100. In this equation y is dependent variable, x is independent variable, 4 is coefficient and - 100 is the constant. A constant is a number ( a quantity that does not vary ). Answer: D ) - 110<span>.</span>
3 0
2 years ago
Read 2 more answers
A store has 20% off sale on pants. With this discount the price of one pair of pants before tax is $15.20. What was the original
Y_Kistochka [10]

Answer:

<h2>Answer :</h2>

The original price is x, so 20% of x, - x, equals the sale price. You can use the equation:

x-.2x=15.20

.8x=15.20

/.8.  /.8

x=19

have a nice day <3

Step-by-step explanation:

5 0
3 years ago
Express in simplified exponential notation.<br><br> x3 • x5 =
Usimov [2.4K]

Answer:

  x^8

Step-by-step explanation:

The applicable rule of exponents is ...

  (x^a)(x^b) = x^(a+b)

Here you have ...

  (x^3)(x^5) = x^(3+5) = x^8

8 0
2 years ago
The bases of a cylinder have a diameter of 4 inches. The height of the cylinder is 6 inches. What is the total surface area of t
Nostrana [21]

Answer:

Step-by-step explanation:

area of base = π4² = 16π in²

lateral area = 2πrh = 2π·4·6 = 48π in²

surface area = 2×16π + 48π = 80π in² ≅ 251.3 in²

3 0
2 years ago
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What is 1/4 - 1/3 + 1/3=​
mamaluj [8]

Answer:

1/4

-1/3+1/3 cancels each other

Step-by-step explanation:

6 0
3 years ago
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