18y - 9y = 9y
9y = 45
9y/9 = 45/9
y = 5
hope this helps
1/4"=1'
2"=???'
2*1=2/4= 1/2'
your answer is 1/2
Answer:
Step-by-step explanation:
56
Be observing the table, we can write the following conjecture:
When adding consecutive even numbers, starting from 2 to

.
Then the sum is equal to:

Then, the sum of the first 15 positive even numbers (which is the sum of 2 to 30) can be calculated with the previous conjecture by setting

:
The answer is 240.