The sum of two. numbers is 25. one number is twice the second number plus seven. what are the the numbers? can i get a step by step explanation i’m trying to learn how to do this correctly.

Let x = the smaller number

Let 2x + 7 = the larger number

x + 2x + 7 = 25

3x = 18

x = 6

2x + 7 = 2(6) + 7 = 19

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1

, 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