20 - 2n
Difference means taking away
Two times a number means whatever n is it is multiples by 2 and subtracted from 20
Answer:
11/2
Step-by-step explanation:
The semi-major axis is 1/2 of the major axis, a, so a = 11/2.
Answer:
I think 15.
Step-by-step explanation:
20 ÷ 5=4 and 5 × 3=15.
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➷ It would be -1.5
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