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3 years ago

What is the discriminant of the quadratic equation -x^2-x-8=0?

Mathematics

1 answer:

Nat2105 [25]3 years ago

8 0

Answer:

-31

Step-by-step explanation:

See Image Below

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I need help with this problem

Vitek1552 [10]

Answer:

X=13

Step-by-step explanation:

So if ΔABC ≅ ΔDEC, then that means that ∠B is ≅ ∠E. Therefore you would write the equation 3x=6x-39 and solve for X to get 13.

7 0

3 years ago

Polygon F has an area of 36 square units. Aimar drew a scaled version of Polygon F and labeled it Polygon G. Polygon G has an ar

timofeeve [1]

Answer:

1/3

Step-by-step explanation:

im just smart (wink)

6 0

3 years ago

2+2= I need to know the answer

aniked [119]

Answer:

2+2=4

Step-by-step explanation:

if you put up 2 fingers and then add 2 more (2+2) you will get 4!

lol I hope that helped!

4 0

3 years ago

Read 2 more answers

Find all real solutions and show work: 2x^3-3x^2+18x-27=0

Amiraneli [1.4K]

Given:

The given equation is

$2x^3-3x^2+18x-27=0$

To find:

All the real solutions.

Solution:

We have,

$2x^3-3x^2+18x-27=0$

It can be written as

$x^2(2x-3)+9(2x-3)=0$

$(2x-3)(x^2+9)=0$

Using zero product property, we get

$(2x-3)=0$ and $(x^2+9)=0$

$2x=3$ and $x^2=-9$

$x=\dfrac{3}{2}$ and $x=\pm\sqrt{-9}$

We know that $x=\pm\sqrt{-9}$ is an imaginary number because there is a negative sign under the square root.

Therefore, $x=\dfrac{3}{2}$ is the only real solution of the given equation.

5 0

3 years ago

5X3X17X200X1,098 the X's are multiplication symbols

Sladkaya [172]

Answer:

55998000

Step-by-step explanation:

When you take 5 time 3 you get 15

Then you take 15 and times that by 17 and get 225

then you take that and multiply that to 200 and get 5100

Finally you multiply 5100 to 1098 and get 5598000

3 0

3 years ago