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3 years ago

10

Sally can paint a room in 5 hours while it takes Steve 8hours to paint the same room. How long would it take them to paint the r

oom if they worked together?

2 answers:

dimaraw [331]3 years ago

6 0

3 hours because all u do is subtract 5 hours and 8 hours and

den301095 [7]3 years ago

5 0

Answer:

you do 8+5/2=2.6 so it took around 2 hours

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If W(-10, 4), X(-3, -1), and Y(-5, 11) classify ΔWXY by its sides. Show all work to justify your answer.

solniwko [45]

Given:

The vertices of ΔWXY are W(-10, 4), X(-3, -1), and Y(-5, 11).

To find:

Which type of triangle is ΔWXY by its sides.

Solution:

Distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Using distance formula, we get

$WX=\sqrt{(-3-(-10))^2+(-1-4)^2}$

$WX=\sqrt{(-3+10)^2+(-5)^2}$

$WX=\sqrt{(7)^2+(-5)^2}$

$WX=\sqrt49+25}$

$WX=\sqrt{74}$

Similarly,

$XY=\sqrt{\left(-5-\left(-3\right)\right)^2+\left(11-\left(-1\right)\right)^2}=2\sqrt{37}$

$WY=\sqrt{\left(-5-\left(-10\right)\right)^2+\left(11-4\right)^2}=\sqrt{74}$

Now,

$WX=WY$

So, triangle is an isosceles triangles.

and,

$WX^2+WY^2=(\sqrt{74})^2+(\sqrt{74})^2$

$WX^2+WY^2=74+74$

$WX^2+WY^2=148$

$WX^2+WY^2=(2\sqrt{37})^2$

$WX^2+WY^2=WY^2$

So, triangle is right angled triangle.

Therefore, the ΔWXY is an isosceles right angle triangle.

3 0

2 years ago

if you have 10 fish and three died in 8 more got put in the fish tank then two died how many fish in the tank now

Juli2301 [7.4K]

you have 10 fish and 3 died (must not have been taking very good care of them ?), but it didnt say that you cleaned them out ...

so you still have 10 fish in the tank

8 more got put in, so 10 + 8 = 18 fish

2 died but you STILL didnt take them out, so you have 18 fish in the tank now.

6 0

3 years ago

An image of a book shown on a website is 3 inches wide and 4.5 inches tall on a computer monitor. The actual book is 9 inches wi

Drupady [299]

Answer:

It Depends

Step-by-step explanation:

If the image is the scale, the answer is 1/3, since its width of 3 is 1/3 the width of the actual book.

If the book is the scale, the answer is 3, since its width of 9 is 3 times the width of the image.

8 0

3 years ago

7) 45 in = __ ft<br> How can you solve this

guapka [62]

Answer:

3.75 feet

Step-by-step explanation:

45in / 12 in= 3.75 feet

You use 12 inches because there are 12 inches in one foot

5 0

3 years ago

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-(10)=1000<br><br>{True or False}<br><br>free 50

velikii [3]

Answer:

false

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers