# Help!

posted by .

I am stumped with a problem we are supposed to help our 4th grader with ... Study the number of pairs: 3 - 8 ; 4 - 11; 5 - 14; 6 - 17; and the it has blanks down to 10 - 29; ... ok we get this part ... adding 2 more each set ... now the questions ... If 50 is the 1st number, what is the 2nd? ... If 200 is the first nimber, what is the 2nd? ...If 89 is the second number, what is the 1st? ... and finally, if a number n is the first number, what is the 2nd? ............ Any help with a specific equation would be most helpful and appreciated!!! ... thank you in advance! ...

• Help! -

3 - 8 difference = 5
4 - 11 difference = 7
5 - 14 difference = 9
etc.
In each case the difference is:
2 x (first number) - 1

• Help! -

Let x = first number
Let y = second number

x +(2x-1) = y
3x-1=y
so
x = (y+1)/3

• Help! -

When they want y (the second number) when given x (the first number),
y = 3x -1

## Similar Questions

1. ### Math

Find 2 solutions to the equation 3x+5y=10. Write the solutions as ordered pairs. This is on my math study guide for our final and she already took up our text books. please help me!

3. ### OLSAT

I don't know if this can be answered here but, I will ask. My son took the OLSAT test. He is a first grader but, on my assessment results he is listed as a 4th grader. His SAI is 110. Would this error change his results?

Find a rule that gives the third number from the first two numbers. Fill in the blanks.....10, 4, 5, ?
5. ### social studies

Can you help me? I am stumped! We are supposed to use our book to fill in the answers. This is the questions I need your help with 1. A (n) is a state's or a country's system of producing, and consuming goods and services. My answer
6. ### math

I'm going over my 4th grader's homework. She has place value math problems. I'm having a problem with this question. In the number 3,024,456, the value of 4 in the hundreds place is _____ times ____ than the value of the other 4. My …
7. ### English

Thank you all for _____ _____ in our volunteer work. 1. Fill in the blanks with suitable expressions. 2. Put two English words in the blanks. 3. What are the appropriate words for the blanks?
8. ### Math

A number, containing no zeros, changed to 310,000 after it was rounded. To what place was the number rounded?
9. ### Pre algebra

How do we set up this problem. The product of a number and 6 is decreased by 8. The result is 13 greater than the product of 4 and the same number increased by 3. What is the number?