All categories

3 years ago

Use the value of the discriminant to determine the type of roots for x²-3x+1=0

Mathematics

1 answer:

nignag [31]3 years ago

7 0

Hi,

Δ = 9 - 4 * 1 * 1 = 5

the roots are :

x1 = (3 - √5) / 2

x2 = (3 + √5) / 2

You might be interested in

Which number line represents the solution set for inequality 3x<-9 ?

vovikov84 [41]

THE RIGHT ANSWER IS OF THIRD OPTION.

HOPE THIS WILL HELP U...

5 0

3 years ago

Read 2 more answers

Can someone please answer this i will give brainliest if i can

Daniel [21]

Answer:

For bag C

Step-by-step explanation:

Bag C has more blue marbles than red ones

5 0

3 years ago

Solve for angle Z please help!!!!

bagirrra123 [75]

180 - 106 = 74

180 - 68 - 74 = 38

5 0

3 years ago

Read 2 more answers

Use cylindrical coordinates. Find the volume of the solid that lies within both the cylinder x2 + y2 = 25 and the sphere x2 + y2

Inessa05 [86]

Answer:

Step-by-step explanation:

we are asked to find the volume of solid that lies within both the cylinder

$x^2 + y^2 = 25$

and

the sphere $x^2 + y^2 + z^2 = 49.$

Conversion from rectangular to cylindrical is

$x=rcost\\y = rsint\\z=z$

|J| =r

In cylindrical coordinates the volume is bounded by the cylinder r=5 and

$r^2+z^2 =49$

Hence we can write volume as

$\int \int \int dxdydz\\=\\\int _0^5 \int_0^{2\pi} \int_{-\sqrt{49-r^2} } ^{\sqrt{49-r^2} rdzdtdr\\= 2\pi \int _0^5 (2\sqrt{49-r^2} rdr\\=4\pi (-(49-r^2) (2/3)\\= \frac{4\pi}{3} (343-48\sqrt{6} )$

6 0

3 years ago

If you spin the spinner, what is the probability it will stop on a multiple of 5?

Y_Kistochka [10]

Answer:

Step-by-step explanation:

1/10

3 0

3 years ago