8n +7(2n-4)=4(7 + 3n) - 6
1 answer:
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Answer:
B
Step-by-step explanation:
Since the triangle is right use Pythagoras' identity to solve for BC
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
BC² = AB² + AC² ← substitute values
BC² = 18² + 80² = 324 + 6400 = 6724 ( take the square root of both sides )
BC = = 82 → B
Looking at the question we can see that it says:
We should know what these symbols mean:
stands for something less than the other, for example:
We can say that 2 is less than 5 so in a symbolic form it can be written as,
Similarly,
stands for something greater than the other, for example:
We can say that 7 is greater than 5, in a symbolic form it can be written as,
So here, means that, 42153 is greater than 35214.