X=7
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Answer:
A
Step-by-step explanation:
sqrt[(2 - 0)² + (sqrt(21) - 0)²]
sqrt(4 + 21)
sqrt(25)
5
Answer:
C
Step-by-step explanation:
We need common denominator, which in this case is 40.
6*5 is 30 and 4*8 is 32.
We add these up 62/40
Now add the wholes, 5+4 is 9
We have an improper fraction, which will add 1 to 9, causing the answer to be C.