2 years ago

Find k such that the roots of the quadratic are real, rational, and equal: 9x^2+kx+1=0

Mathematics

1 answer:

Georgia [21]2 years ago

4 0

Answer:

Step-by-step explanation:

9x^2+kx+1=0

k= -9x-1/x

You might be interested in

Plz help ASAP the number that is cut off on 69 is 24

Minchanka [31]

Answer:

$A=256\ units^2$

Step-by-step explanation:

The given figure shows a triangular pyramid having 16 units as height. The base of pyramid is triangle.

The area of a triangular pyramid is given by :

$A=\dfrac{1}{3}bH$

Where

b is the area of base

$A=\dfrac{1}{3}\times \dfrac{1}{2}\times B\times h\times H\\\\=\dfrac{1}{6}\times 12\times 8\times 16\\\\=256\ units^2$

So, the required area is equal to $256\ units^2$ .

7 0

2 years ago

If 6 men finish a piece of work in 8 days, how long will it rake 4 men to

Anna11 [10]

Answer:

6 men finish a piece of work in 8 days

1 men finish a piece of work in 8*6 days

4men will finish a piece of work in 48/4

days

which is equal to 12 days

7 0

2 years ago

Read 2 more answers

Find the x-intercepts of the parabola with vertex (1, -9) and y intercept at (0, -6).

Sergio [31]

Hello,

Equation is y=k(x-1)²-9
and when x=0,y=-6==>-6=k*1²-9==>k=3

y=3(x-1)²-9
when y=0, 3(x-1)²-9=0
==>(x-1-√3)(x-1+√3)=0
x-intercepts are (1+√3,0) and (1-√3,0)

Answer B.

3 0

3 years ago

The interest that Julia earns on her investment is given by the equation I=48t where t is the time in years that her money is in

harina [27]

The answer would be D.

3 0

3 years ago

Read 2 more answers

YOOOOOOOO I FINALLY WAS ABLE TO GET REGISTERED

Agata [3.3K]

Answer:

Ty for the free points lol

8 0

3 years ago

Read 2 more answers