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sweet [91]
3 years ago
5

Create a quadratic equation that has complex solutions

Mathematics
1 answer:
svetoff [14.1K]3 years ago
4 0

Answer:

x^2 + x + 2 = 0.

Step-by-step explanation:

The discriminant b^2 - 4ac is < 0 for complex roots.

So we can choose appropriate values for a, b and c.

Let b = 1,  a = 1 and  c = 2 so b^2 - 4ac = 1 - 4*1*2 = -7.

So our equation is:

x^2 + x + 2 = 0.


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The value of y directly varies with the value of x. If y equals 21when x is 14, what is the value of y when x = 20?
Karo-lina-s [1.5K]

Answer:

21×20÷14

=3×20÷2

=3×10

x=30

8 0
3 years ago
In ΔABC, the measure of ∠C=90°, BA = 41, CB = 40, and AC = 9. What ratio represents the cosine of ∠B?
blsea [12.9K]

Answer:

40/41

Step-by-step explanation:

From the given diagram;

BA is the hypotenuse = 41

AC is the opposite = 9

CB is the adjacent = 40

Cos<B = adjaccent/hyp

Cos<B = CB/BA

Cos<B = 40/41

Hence the required ratio is 40/41

3 0
3 years ago
Mellisa created a graph
vovikov84 [41]

Answer:

no she didn't

Step-by-step explanation:

melissa has no hands

6 0
3 years ago
-74.25<br> That the right answer
Andrej [43]

Answer:

Okay...

Step-by-step explanation:

7 0
3 years ago
Square with side 4 is dilated by 7
Kazeer [188]

Answer:

196 in/cm/m²

Step-by-step explanation:

Given that the scale factor is a : b , then the area factor is a² : b² Here the scale factor is 1 : 7 , thus area scale factor is 1² : 7² = 1 : 49 That is the area of the dilated square is 49 times the original square. area of dilated square = 4 × 49 = 196 in/cm/m²

5 0
3 years ago
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