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delphinelilly2846
02.09.2021 •
Mathematics
Select Rational or irrational for each number
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Ответ:
Step-by-step explanation:
We are here given that a point B is between A and C . Also ,
Value of AB = 2x Value of BC = 3x + 1 Value of AC = 21 .And we would like to calculate the length of BC . For figure refer to the attachment. From figure we can see that ,
Substitute the respective values,
Add like terms ,
Subtract 1 on both sides,
Simplify,
Divide both sides by 5,
Now consider ,
Plug in the value of x found above ,
Simplify,
Add,
And we are done !