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3 years ago

Can someone please explain this problem?

Mathematics

1 answer:

kolezko [41]3 years ago

7 0

I have the same problem. I think it is 4.

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I need answer please

Assoli18 [71]

It is centered at (h,k) --> (0,0) and has a radius 9

The equation of the circle is

$(x-h)^{2} +(y-k)^{2} =r^{2} \\(x-0)^{2} +(y-0)^{2} =r^{2}\\x^{2} +y^{2} = 9^{2}$

Hope that helps!

4 0

3 years ago

What is the quotient (3x^2+8x-3)/ (x+3)

Dvinal [7]

Answer:

The quotient ix 3x - 1.

Explanation:

Use Long division:

3x - 1 <------------quotient.

---------------------

x + 3) 3x^2 + 8x + 3

3x^2 + 9x

-------------

-x + 3

-x - 3

------

6 <---------remainder.

6 0

3 years ago

I WILL MARK 5.0 AND ANYTHING YOU WANT!! NEED THIS ASAP

Dominik [7]

Answer:

119°

Step-by-step explanation:

$m\angle BAD = 62\degree + 57\degree$

(Vertical angles)

$m\angle BAD = 119\degree$

4 0

3 years ago

A quadratic equation ax^2+bx+c=0 has -11 and 4 as solutions. Find the values of b and c if the value of a is 1 (hint, use zero f

Alina [70]

Answer:

b = 7, c = -44

Step-by-step explanation:

If the quadratic equation has the solutions -11 and 4, the two factors are:

$(x+11)(x-4)=0$

Since when we use the zero factor property we get

x+11=0 ⇒ x= -11

x-4=0 ⇒ x=4

Thus, we have used the zero factor property in reverse to find the factorization of the quadratic equation.

Now we develop the multiplications between parenthesis:

$(x+11)(x-4)=0\\x^2-4x+11x-44=0\\x^2+7x-44=0$

So b is the number that accompanies the x: b = 7

and c is the independent number: c = -44

3 0

3 years ago

A cube is shown.<br><br> What is the surface area of the cube?

valkas [14]

1350 cm^2. First, we must find the area of one side. The formula for the area of a square is S^2 or S*S, so plugging in the value of the side we get 15*15=225. So each side of the cube is 225 cm^2, so since there are 6 sides, we just multiply by 6 (225*6=1350).

4 0

3 years ago

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