Answer:
20
Step-by-step explanation:
the two closest are 20 and 30
21 is the next digit after 20 and the closest to it.
21 is 9 away from 30 and is farther.
Answer:
34
Step-by-step explanation:
Just as in base 10, when you get to the highest single digit and add 1, you carry into the next higher place value. If your number were 129 in base 10, the next number in sequence is 130. If your number were 1399, the next number in sequence would be 1400.

mercury : 5.8 • 107 = 620.6
Venus : 1.1 • 108 =118.8
620.6 - 118.8 = 501.8
so Venus is about 501.8 kilometers from then sun then mercury
Answer:
(y−3)2=16(x−2) is the equation of the parabola. Explanation: Whenever vertex(h,k) is known to us, we must preferably use the vertex form of the parabola:
Step-by-step explanation: