Sophie has to water her aloe plant every 18 days and her spiral cactus every 30 days .if she waters both plants today, how long will it be until she waters plants on the same day again

both watered on the same day, If we multiply 18 by any number such as 2,3,4,5 we can find the next soonest date that they will both be watered on. 18*2,3,4,5   30,2,3,4,5  

18*2,3,4 are not multiples of 30, 18*5 is 90

30*2 is not a multiple of 18, 30*3 is 90

Now we know the next closest date they will be watered again is 90 days from now.

Step-by-step explanation:

answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for