Answered

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Using the following image, solve for CD. 2x - 9 Сс X-9 • E 12 CD |

Using The Following Image Solve For CD 2x 9 Сс X9 E 12 CD class=

Sagot :

Answer

CD = 11 units

Explanation

From the image, we can see that

CD = 2x - 9

DE = x - 9

CE = CD + DE

CE = 12

CE = CD + DE

CE = (2x - 9) + (x - 9)

12 = 2x - 9 + x - 9

12 = 3x - 18

We can rewrite this as

3x - 18 = 12

3x = 12 + 18

3x = 30

Divide both sides by 3

(3x/3) = (30/3)

x = 10

CD = 2x - 9 = 2(10) - 9 = 20 - 9 = 11 units

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