Answer:
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Step-by-step explanation:
Answer:
the answer is f(4)=7
Step-by-step explanation:
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Answer: 200 in squared
Step-by-step explanation:
Each of the triangles in this picture are the same. You can tell because it's a square, and because of the dotted line.
Take the white triangle and substitute it for one of the black ones. Now, you have this.
Now, just do 10 * 20
= 200
So basically, you would have to do 89/100, and 89/100 is 89%