a new road was added near Riana's neighborhood. the road is 5 miles long, and the city plans to place a streetlight every 1/10 mile. there already is a street light at the beginning of the new road. how many street lights will be placed on the new road?​

50

Step-by-step explanation:

stop using this to cheat on home work

step-by-step explanation:

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, 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