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2 years ago

6

Steve is replacing the carpet in his square shaped living room. Which formula should Steve use to calculate the amount of carpet

padding he should buy? (Options in picture)

1 answer:

Ray Of Light [21]2 years ago

6 0

He would need to find the area of the room (area of the rectangle) by multiplying the length of the room by the width of the room.

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the volume of the a sphere whoes diameter is 18 cm is cubic cm . if it's diameter were reduced by half, it's volume would be of

FrozenT [24]

Answer:

The new volume is 8 times smaller than the original volume

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z-----> the scale factor

x ----> the volume of the reduced sphere

y ----> the volume of the original sphere

so

$z^{3}=\frac{x}{y}$

we have

$z=1/2$ ----> scale factor

substitute

$(1/2)^{3}=\frac{x}{y}$

$(1/8)=\frac{x}{y}$

$x=\frac{y}{8}$

therefore

The new volume is 8 times smaller than the original volume

Verify

The volume of the original sphere is

$r=18/2=9\ cm$ ---> the radius is half the diameter

$V=\frac{4}{3}\pi (9)^{3}=972\pi \ cm^{3}$

the volume of the reduced sphere is

$r=9/2=4.5\ cm$ ---> the radius is half the diameter

$V=\frac{4}{3}\pi (4.5)^{3}=121.5\pi \ cm^{3}$

Divide the volumes

$972\pi \ cm^{3}/121.5\pi \ cm^{3}=8$

4 0

3 years ago

The H.C.F and the LCM of two numbers are 36 and 720 respectively. If one of the numbers is 180, which is the other number. *

lutik1710 [3]

Answer:

let p(x)=180

LCM=720

HCF=36

WE HAVE TO FIND q(x)=?

as we know that

p(x)×q(x)=LCM×HCF

NOW WE HAVE TO FIND q(x)

q(x)=LCM×HCF/p(x)

q(x)=720×36/180

q(x)=25920/180

q(x)=144

i hope this will help you

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3 years ago

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A letter that represents an unknown number

poizon [28]

<span>The word variable represents an unknown number.

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3 years ago

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HELP ME PLESE ,3 I NEED THIS

Trava [24]

Answer:

270°

Step-by-step explanation:

$m\widehat{BC} = 360\degree - (146\degree + 90\degree) \\m\widehat{BC} = 360\degree -236\degree \\m\widehat{BC} = 124\degree \\\\m\widehat{ABC} =m\widehat {AB} + m\widehat {BC} \\m\widehat{ABC} =146\degree + 124\degree \\\huge \red {\boxed {m\widehat{ABC} =270\degree}} \\$

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3 years ago

How to solve 6[5x(41-36)-(8+14)]

Harrizon [31]

6[5x(41-36) - (8+14)]
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3 years ago