Cynthia can wallpaper a room in 4 hours and her brother can do it in 6 hours. How long would it take them if they work together

Mathematics

1 answer:

Debora [2.8K]3 years ago

3 0

Answer:

2 hours and 24 minutes

Step-by-step explanation:

cynthia can wallpaper a room 4 hours with means in 1 hour she can wallpaper 1/4th of the room, her brother can wallpaper the same room in 6 hours so I'm 1 hour he can wallpaper 1/6 of the room.

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What is the mapping notation that will transform triangle ABC to triangle A'B'C'?

Kaylis [27]

Answer:

The transformation is (y,-x)

Step-by-step explanation:

To know the mapping notation, we need to know the coordinates of the image and the pre-image

For the pre-image, we have;

A(3,8)

B(6,8)

C(6,2)

For the image, we have

A’( 8,-3)

B’ (8,-6)

C’ (2,-6)

So let us try and get the transformation from the coordinates

We can see that this is;

(x,y) to (y,-x)

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3 years ago

As Jackson built a square fence around his garden, he wondered how much he would have to pay if he increased the length of each

Rom4ik [11]

A good function for this situation would be

c = 4(3m)

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4 0

3 years ago

Answer if you can and help other people out

oksano4ka [1.4K]

<h2>Answer:</h2><h2>131.964 cm</h2>

Solution,

radius=21 cm

Circumference of circle=2 pi r

 =2*3.142*21