All categories

3 years ago

The area of a square dollhouse is 289 square inches. How long is each side of the dollhouse?

Mathematics

2 answers:

EastWind [94]3 years ago

8 0

Answer:

Step-by-step explanation:

Romashka-Z-Leto [24]3 years ago

4 0

Answer:

17 sq inches

Step-by-step explanation:

You might be interested in

Find a nonzero vector orthogonal to the plane through the points: ????=(0,0,1), ????=(−2,3,4), ????=(−2,2,0).

ser-zykov [4K]

Answer:

The nonzero vector orthogonal to the plane is <-9,-8,2>.

Step-by-step explanation:

Consider the given points are P=(0,0,1), Q=(−2,3,4), R=(−2,2,0).

$\overrightarrow {PQ}==$

$\overrightarrow {PR}==$

The nonzero vector orthogonal to the plane through the points P,Q, and R is

$\overrightarrow n=\overrightarrow {PQ}\times \overrightarrow {PR}$

$\overrightarrow n=\det \begin{pmatrix}i&j&k\\ \:\:\:\:\:-2&3&3\\ \:\:\:\:\:-2&2&-1\end{pmatrix}$

Expand along row 1.

$\overrightarrow n=i\det \begin{pmatrix}3&3\\ 2&-1\end{pmatrix}-j\det \begin{pmatrix}-2&3\\ -2&-1\end{pmatrix}+k\det \begin{pmatrix}-2&3\\ -2&2\end{pmatrix}$

$\overrightarrow n=i(-9)-j(8)+k(2)$

$\overrightarrow n=-9i-8j+2k$

$\overrightarrow n=$

Therefore, the nonzero vector orthogonal to the plane is <-9,-8,2>.

8 0

3 years ago

The length of a rectangle is 8cm and the height is 16cm find the answer of the above figures using this formular...

notsponge [240]

Length=8cm
Breadth=16cm(Height)

<h3>Perimeter:-</h3>

$\\ \sf\longmapsto Perimeter=2(L+B)$

$\\ \sf\longmapsto Perimeter=2(16+8)$

$\\ \sf\longmapsto Perimeter=2(24)$

$\\ \sf\longmapsto Perimeter=48cm$

Area:-

$\\ \sf\longmapsto Area=Length\times Breadth$

$\\ \sf\longmapsto Area=8(16)$

$\\ \sf\longmapsto Area=128cm^2$

3 0

3 years ago

The perimeter of a rectangle is 60. The length is 10 more than the width. find the length and width

Elenna [48]

Answer:

Width is 10 Length is 20

Step-by-step explanation:

Perimeter = 60

Length = W + 10

P = 2L + 2W Write the equation for perimeter

60 = 2(W + 10) + 2W Substitute your variables

60 = 4W + 20

- 20 - 20 Subtract 20 from both sides

40 = 4W Divide both sides by 4

10 = W

8 0

3 years ago

Read 2 more answers

Algebra 2 help needed image below

Nookie1986 [14]

Answer:

8x + 100

Step-by-step explanation:

Your answer is correct! But because the equation is already set to "y =", you do not need the "f(x)" in your equation.

7 0

2 years ago

SOMEONE PLEASE HELP ME i really need this one

jek_recluse [69]

Answer:

Wait are u trying to find the area of a shape???

Step-by-step explanation:

8 0

3 years ago