All categories

4 years ago

A rectangular quilt is 5 feet wide and 7 feet long. How many feet of lace are needed to cover the edges of the quit?

Mathematics

1 answer:

topjm [15]4 years ago

4 0

P=2*(5ft +7 ft)
P=2*12 ft
P=24 ft - is the answer

You might be interested in

Find the area of the part of the paraboloid z = 9 - x^2 - y^2 that lies above the xy-plane.

svetoff [14.1K]

Parameterize this surface (call it $S$ ) by

$\vec r(u,v)=u\cos v\,\vec\imath+u\sin v\,\vec\jmath+(9-u^2)\,\vec k$

with $0\le u\le3$ and $0\le v\le2\pi$ . Take the normal vector to $S$ to be

$\vec r_u\times\vec r_v=2u^2\cos v\,\vec\imath+2u^2\sin v\,\vec\jmath+u\,\vec k$

Then the area of $S$ is

$\displaystyle\iint_S\mathrm dA=\iint_S\|\vec r_u\times\vec r_v\|\,\mathrm du\,\mathrm dv$

$=\displaystyle\int_0^{2\pi}\int_0^3u\sqrt{1+4u^2}\,\mathrm du\,\mathrm dv$

$=\displaystyle2\pi\int_0^3u\sqrt{1+4u^2}\,\mathrm du=\boxed{\frac{37\sqrt{37}-1}6\pi}$

3 0

4 years ago

Please help asap this is really important

Neporo4naja [7]

Answer:y=2x+2

Step-by-step explanation:

click on calculator.net. All you have to do is put in the coordinates and it will give you the slope and it will put it into slope intercept form.

8 0

3 years ago

Read 2 more answers

What fact can we use to justify step 1?

Alex_Xolod [135]

I don’t know what the heck is

6 0

3 years ago

Read 2 more answers

Am nevoie de rezolvari pana la 1, dau coroana

Zanzabum

Answer:

si muy bien

Step-by-step explanation:

Si muy beim mi amigo

6 0

3 years ago

Please help me with geometry.

disa [49]

Answer:

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept → (0, b).

Parallel lines have the same slope.

Therefore if k: y = 6x + 7 → m = 6, and l: y = mx +b,

then l is parallel to k if m = 6.

We have the equation: y = 6x + b.

The line l passes through (0, 9). Therefore b = 9.

Finally we have:

y = 6x + 9

6 0

3 years ago