This is a difference of squares problem. You just have to make sure every term is a perfect square and that there is subtraction in the problem.
What solid figure has eight vertices?
1 answer:
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Answer:
9. C
10. C
11. C
Step-by-step explanation:
9.
simply,
10.
the greatest divisor of 28 is 7, so:
28 + 7 = 35
11.
the greatest divisor of 15 is 5, so:
15 + 5 = 20
n = 20
the greatest divisor of 20 is 10, so:
20 + 10 = 30