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4 years ago

What does it mean to approximate the zeros? And how would I do that?

Mathematics

1 answer:

I am Lyosha [343]4 years ago

8 0

Answer:

x ≈ - 1.56

x ≈ 2.56

Step-by-step explanation:

x^2 - x = 4

x^2 - x + 1/4 = 17/4

( x - 1/2 )^2 = 17/4

x - 1/2 =Sqrt[17]/2 or x - 1/2 = - (Sqrt[17]/2)

x = 1/2 + Sqrt[17]/2 or x = 1/2 - (Sqrt[17]/2)

The formula - b +- srt(b^2 - 4ac) / 2a could also be used

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Grade 6 math 1. Mr. Carlos bought a T-shirt for ₱ 254.95. Round this off to the nearest peso.

sladkih [1.3K]

Answer:

255

Step-by-step explanation:

254.95

.95 is closest to 255.

254.95...255.

5 0

2 years ago

an automobile has 20 inch diameter wheels if the wheels revolved three times after the brakes were applied, the stopping distanc

Marrrta [24]

Answer:

188.49

Step-by-step explanation:

use the diameter to find the circumference..

C = d pi or C = 2r pi

when you plug in 20, you get 62.83

now take that, and multiply it by 3, because the wheels went around three times.

62.83 * 3 = 188.49 inches

i hope this was helpful to you!

stay safe!!

4 0

3 years ago

) Set up a double integral for calculating the flux of F=3xi+yj+zk through the part of the surface z=−5x−2y+2 above the triangle

Fynjy0 [20]

The surface (call it $S$ ) is a triangle with vertices at the points

$x=0,y=0\implies z=2\implies(0,0,2)$

$x=0,y=2\implies z=-2\implies(0,2,-2)$

$x=2,y=0\implies z=-8\implies(2,0,-8)$

Parameterize $S$ by

$\vec s(u,v)=(1-v)(2,0,-8)+v\bigg((1-u)(0,2,-2)+u(0,0,2)\bigg)=(2-2v,2v-2uv,-8+6v+4uv)$

with $0\le u\le1$ and $0\le v\le1$ . Take the normal vector to $S$ to be

$\vec s_v\times\vec s_u=(20v,8v,4v)$

Then the flux of $\vec F$ across $S$ is

$\displaystyle\iint_S\vec F(x,y,z)\cdot\mathrm d\vec S=\int_0^1\int_0^1\vec F(x(u,v),y(u,v),z(u,v))\cdot(\vec s_v\times\vec s_u)\,\mathrm du\,\mathrm dv$

$=\displaystyle\int_0^1\int_0^1(6-6v,2v-2uv,-8+6v+4uv)\cdot(20v,8v,4v)\,\mathrm du\,\mathrm dv$

$=\displaystyle8\int_0^1\int_0^1(11v-10v^2)\,\mathrm du\,\mathrm dv=\boxed{\frac{52}3}$

8 0

4 years ago

How do you round off 341

SSSSS [86.1K]

You only can if 341 has a decimal of some sorts. other than that, you cannot round it.

4 0

4 years ago

Read 2 more answers

The following values of (x) and f(y) are given. Find the best value of (dy/dx) at

velikii [3]

Answer:

dy/dx at x=6 is 0.334

Step-by-step explanation:

The center difference method requires that the values of the function are given in equal intervals which is the case, and allows one to find the value for x = 6 using those of the function for x = 5.5 and for x = 6.5 as follows:

$\frac{dy}{dx} =\frac{3.7436-3.4096}{6.5-5.5} =0.334$

4 0

3 years ago