Answer:
A
Step-by-step explanation:
6 and the square root of 9 are both rational numbers and they are being multiplied by 5 which is also rational.
Answer:

Step-by-step explanation:
we have:

we also have:

from (1)(2) => proven
Answer:
3/4
Cause there are 3 sixes in 18 and 4 sixes in 24
10 days is twice the half-life. After 5 days, can expect

grams to remain; after another 5 days, you'd be left with

grams.