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Angelina_Jolie [31]
3 years ago
13

1. Here is a polygon. Draw a scaled copy of the polygon using a scale factor of 1/2.

Mathematics
1 answer:
Sidana [21]3 years ago
6 0

Answer: For the first question it is basically half of the polygon.

Step-by-step explanation:

If you count the units, for example one of the side is 4 units. What is half of 4. It is 2

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Point G is the centroid of the right △ABC with hypotenuse AB=18 in. Find CG.
Rama09 [41]
<h3>Answer:</h3>

6 in

<h3>Explanation:</h3>

Let M be the midpoint of AB. ∆CMB and ∆CMA are both isosceles triangles, so CM = (AB)/2 = 9 in.

CG = (2/3)(CM) = (2/3)(9 in)

CG = 6 in

_____

<em>Comment on centroid and median</em>

The centroid of a triangle is located 1/3 the distance from the midpoint of a side to the opposite vertex. This is true for any median in any triangle. The proof can be developed from the fact that every median divides the triangle's area in half. Here, we just take advantage of this fact.

5 0
4 years ago
8 cleaners can clean an office in 3 hours,if the block needs to be cleaned in 2 hours,how many cleaners will be needed?
romanna [79]

Answer:

12 cleaners

Step-by-step explanation:

8 cleaner can clean in 3 hours = 1 office

1 cleaner can clean in 3 hours = \frac{1}{8}  part of job

1 cleaner can clean in 1 hours = \frac{1}{3 \times 8}  part of job

Let the number of cleaner required to finish the job in 2 hours = x

hence

x cleaner can clean in 1 hours = \frac{1 \times x }{24}  part of job

x cleaner can clean in 2 hours = \frac{2 \times x }{24}  part of job

Hence

\frac{2 \times x }{24}=1

\frac{2x}{24}=1

2x=24

x=12

Hence we need 12 men to complete the same job in 2 hours

4 0
3 years ago
What is the length of YZ?​
Marianna [84]
40
Subtract 48 from 88
3 0
3 years ago
What is the amount of sales tax owed on a $550 laptop computer if the tax rate is 7%?
Licemer1 [7]

Answer:

$550=100%

550 divided by 100=$5.5=1%

5.5x7=$38.5=7%

$38.50+550=588.50$

7 0
3 years ago
45 and 105 divisible by which table​
dezoksy [38]

Answer:

15 table

Step-by-step explanation:

-----→15×3=45

-----→15×7=105

8 0
3 years ago
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