All categories

3 years ago

Which pair of values could NOT be the roots of a quadratic polynomial?

Mathematics

2 answers:

DENIUS [597]3 years ago

7 0

Answer:

Part c

Step-by-step explanation:

In quadratic equations of real coefficients, the complex roots always occur in conjugate bases. It means, if, 2 + 3i is one of the roots and then the second root must be 2 - 3i.

sasho [114]3 years ago

6 0

That’s with be (c) you welcome!!!!

You might be interested in

The original price of a fitness tracker is $85. It is on sale for 10% off. What is the sale price of the fitness tracker?

Elza [17]

First you do 1.00-0.10 to get 0.90, then you times 85 by 0.90 to get your result of $76.5 a brainliest would be appreciated if i helped!

Answer: 76.5 dollars

3 0

2 years ago

Read 2 more answers

A small garden measures 9 ft by 13 ft. A uniform border around the garden increases the total area to 192 ft square. What is the

victus00 [196]

The width of border is 1.5 feet

<h3><u>Solution:</u></h3>

Given that small garden measures 9 ft by 13 ft

A uniform border around the garden increases the total area to 192 ft square

To find: width of border

Let the width of border be "x"

Then the new measures of garden are (9 + 2x) feet and (13 + 2x) feet

The total area of garden = 192 square feet

$(9 + 2x)(13 + 2x) =192$

$117 + 18x + 26x + 4x^2 = 192\\\\4x^2 + 44x - 75 = 0$

<em><u>Let us solve the above equation by quadratic formula</u></em>

$\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0\\\\x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Using the above formula,

For $4x^2 + 44x - 75 = 0$ , we have a = 4 ; b = 44 ; c = -75

Substituting the values of a = 4 ; b = 44 ; c = -75 in above quadratic formula we get,

$\begin{aligned}&x=\frac{-44 \pm \sqrt{44^{2}-4(4)(-75)}}{2 \times 4}\\\\&x=\frac{-44 \pm \sqrt{1936-1200}}{8}\\\\&x=\frac{-44 \pm \sqrt{3136}}{8}\\\\&x=\frac{-44 \pm 56}{8}\end{aligned}$

$\begin{aligned}&x=\frac{-44+56}{8} \text { or } x=\frac{-44-56}{8}\\\\&x=\frac{12}{8} \text { or } x=\frac{-100}{8}\\\\&x=1.5 \text { or } x=-12.5\end{aligned}$

Since "x" cannot be negative,

we get x = 1.5

Thus width of border is 1.5 feet

4 0

3 years ago

Find the difference (9/4+60-(-5/4x-24)

sasho [114]

Answer:

5 ( x + 69)/4

Step-by-step explanation:

7 0

3 years ago

A shorter style of cup is stacked tall. The graph displays the height of the stack in centimeters for different numbers of cups.

Strike441 [17]

Answer:

0.5

Step-by-step explanation:

We are looking for how much height is gained per cup added.

Height per cup added can be calculated by finding the slope of the line that runs through the two given points on the graph, (3, 5.5) and (8, 8).

Formula for slope =

Let,

3 0

3 years ago

Read 2 more answers

At the farmers market you buy 2 pounds of blueberries for $5.00. What is the cost per pound?

Tju [1.3M]

Answer:

$2.50

Step-by-step explanation:

Divide 5 by 2.................

3 0

4 years ago