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3 years ago

6

Give an example of a quadratic with complex roots. Explain how you know it has complex roots.

1 answer:

Vladimir [108]3 years ago

5 0

2x^2 + x + 3=0 has only complex roots.

The determinant is 1-4*2*3 = -23

-23 (or any determinant) is the part under the square root sign, If that determinant is negative, knowing you cannot take the square root of a negative number, we know the answers must be complex.

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your mom bought 2.5 lbs of Turkey breast from shoprite and paid $8.10 How much was the turkey breast per pound?

asambeis [7]

To find how much it was per pound, you divide $8.10 by 2.5 lbs

8.10/2.5 = 3.24

$3.24 per pound

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3 years ago

Tickets to a show cost $10 in advance and $15 at the door if 120 tickets are sold for a total of $1390, how many of the tickets

Flauer [41]

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3 years ago

What makes the number sentence true <br><br> 420,008 - 9,569 = n

Ronch [10]

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8 0

3 years ago

Question 2: Please help I do not understand this question.

Svetradugi [14.3K]

The measurement of AB is 16.23.

Solution:

Given ACB is a right angled triangle.

AC = 10, ∠C = 90° and ∠A = 52°.

cos θ ≈ 0.616

Here AC is the base and AB is Hypotenuse.

To find the length of AB:

$$\cos\theta=\frac{\text{Base}}{\text{Hypotenuse}}$

$$\cos 52^\circ=\frac{10}{AB}$

$$0.616=\frac{10}{AB}$

Do cross multiplication, we get

$$AB=\frac{10}{0.616}$

AB = 16.23

Hence the measurement of AB is 16.23.

5 0

3 years ago

Solve each equation mentally.

larisa [96]

Answer:

1) 1/17

2) 1/111

3) 1/15

They're all fractions

Hope that helped, just divide the result with the number available

Example :

1÷17 =1/17

4 0

3 years ago