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PLEASE HELP I WILL CHOOSE BRAINLIEST!

PLEASE HELP I WILL CHOOSE BRAINLIEST class=

Sagot :

Answer:

x=9

Step-by-step explanation:

Use the triangle Similarity theorem. First, make a proportion.

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21 / 77 is equal to 30 / 11x + 11         then solve.

Step 1: Cross-multiply.

21*(11x+11)=(30)*(77)

231x+231=2310

Step 2: Subtract 231 from both sides.

231x+231−231=2310−231

231x=2079

x=9

HOPE THIS HELPS!