3 years ago

What is the answer for (-4)+(-6)

Mathematics

1 answer:

harina [27]3 years ago

5 0

(-4)+(-6)=-(4+6)=-10

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Which of the following is equivalent to the polynomial below?

Gnoma [55]

Answer:

$(x-(4+\sqrt{3}i))(x-(4-\sqrt{3}i))$

Step-by-step explanation:

Consider the quadratic expression

$x^2-8x+19$

First, find its discriminant:

$D=(-8)^2-4\cdot 1\cdot 19=64-76=-12$

Note that $i^2=-1,$ then $D=12i^2.$

Use quadratic formula to find the roots:

$x_{1,2}=\dfrac{-(-8)\pm \sqrt{12i^2}}{2\cdot 1}=\dfrac{8\pm 2\sqrt{3} i}{2}=4\pm \sqrt{3}i$

Now, given quadratic expression is equivalent to

$(x-(4+\sqrt{3}i))(x-(4-\sqrt{3}i))\\ \\=(x-4-\sqrt{3}i)(x-4+\sqrt{3}i)$

6 0

3 years ago

I need the answer fast please

iogann1982 [59]

Answer:

Step-by-step explanation:

It is A' because they are corresponding angles, it is the same exact shape it has just been translated to a different area of the graphic plane.

If my answer is incorrect, please notify me and I'll assess what it was that I did wrong.

3 0

3 years ago

Determine whether a triangle can be formed with the given side lengths. If the side lengths can form a

Marrrta [24]

Answer:

Yes it can

Step-by-step explanation:

7+7=14 greater than 5

7+5=12 greater than 7

7+7=14 greater than 5

A traingle can be construct with these side lengths. (Can I have brainliest)

6 0

3 years ago

Solve:

never [62]

C. Eight ninths because 1/3=3/9 and 3/9 +5/9= 8/9

5 0

3 years ago

What is the radius of a circle with a central angle of 4π7 radians that intercepts an arc of length 12π in.?

Snezhnost [94]

$\frac{4 \pi}{7}R=12 \pi \\ \\ \Rightarrow R = \frac{12 \pi \times 7}{4 \pi} \\ \\ \Rightarrow \boxed{ R = 21\ in}$

8 0

4 years ago