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Law Incorporation [45]
3 years ago
15

If square ABCD is dilated by a scale factor of 1 3 with a dilation center at vertex A, by what factor does the area of the squar

e decrease? A) 1 9 B) 1 2 C) 2 D) 4
Mathematics
1 answer:
svetoff [14.1K]3 years ago
4 0

Assuming you meant to say "scale factor 1/3", then the answer is A) 1/9

This is because we simply square the scale factor to get

(1/3)^2 = (1/3)*(1/3) = 1/9

----------

For example, let's say we had a square that was 18 by 18. Its area would be 18*18 = 324 square units.

Now reduce each side by the scale factor 1/3 getting the new length 18*(1/3) = 6. The new area is 6*6 = 36

Compare 36 and 324 to see that 36/324 = 1/9. The new area is 1/9th of the old one

new area = (1/9)*(old area)

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Solve <br> S = 2πr(h + r) for h
Margarita [4]

Answer:

S/2πr-r = h

Step-by-step explanation:

S = 2πr(h + r)

S/2πr = h+r

S/2πr - r = h

6 0
2 years ago
It costs miksel $4 to make a bike bag, if he sells each gor $5. He has made a profit of $16 dollars so far
mixas84 [53]

Answer:

16

Step-by-step explanation:

5-4 = 1 so total profit would be $1 for each bag.

Because he makes 1 dollar per bag this is a fairly simple to see how many he has but we will pretend its not so you have an idea of how to do this later.

You should divide the final profit he's made by the total he gets per each, which would give you how many he has made.

$16/$1 = 16 bags produced.

4 0
3 years ago
The surface area of a rectangular prism is 15 m2.
ch4aika [34]
1.5 × 10^5 = 150,000

You answer is C. 150,000 cm²
4 0
3 years ago
The angled lines used to indicate the surfaces which are cut by the imaginary cutting-plane are called:
Scilla [17]

Answer:

Section lines

Step-by-step explanation:

Sectioning is the process of cutting a surface by an imaginary plane, the view of the surface that is cut is shown in the section view.

Section lines are used to indicate where an imaginary cutting plane cuts a material. The imaginary cut is then represented using section lines which are usually thin, crosshatched.

Section lines shows the surface that have been cut by the cutting plane. There are different ways of sectioning such as full section, half section, off set section and so on

8 0
3 years ago
Which of the following statements are true for this diagram?
ch4aika [34]

Answer: ABC-ODG

Step-by-step explanation: They all are the same angles.

4 0
3 years ago
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