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LenaWriter [7]
3 years ago
12

The area of trapezoid AEDB is 300 square centimeters. Triangle EDC has a height of 20 cm and a base of 10 cm. What is the area o

f parallelogram AECB?
100 square centimeters

150 square centimeters

200 square centimeters

250 square centimeters
Mathematics
2 answers:
Ksenya-84 [330]3 years ago
4 0
Using base x height you get 100 square centimeters
I am Lyosha [343]3 years ago
3 0
A 100 square centimeters
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Answer:

( 2,1) is the center of dilation and -2 is the scale factor

Step-by-step explanation:

We can use the formula

A' = k( x-a) +a, k( y-b)+b  where ( a,b) is the center of dilation and k is the scale factor

(0,0) becomes (6,3)

( 6,3) =  k( 0-a) +a, k( 0-b)+b

6 = -ka+a

3 = -kb+b

We also have

(4,0) becomes (-2,3)

( -2,3) =  k( 4-a) +a, k( 0-b)+b

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6 = -ka+a

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Subtracting the top from the bottom

-2 =4k -ka+a

-6 = ka -a

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Divide by 4

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Now solving for a

6 = -ka +a

6 = - (-2)a +a

6 = 2a+a

6 = 3a

Divide by 3

6/3 =3a/3

2=a

Now finding b

3 = -kb+b

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yan [13]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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