Answer:
2
Step-by-step explanation:
Vinegar is the x or horizontal oil is the y or vertical
the point represent the amount of vinegar and oil so for 1 tbsp vinegar you need 1.5tbsp oil
Answer:
-$73.73
Step-by-step explanation:
To get this answer, we must subtract 23.73 from -50, as Mr. Alexander is losing money by spending. Once we subtract, we get -73.73 dollars.
Hope this helps!
Answer:
Step-by-step explanation: subtract 160 and 125 and you’ll get 35
Answer:
<u>The sequence is</u>
- 1, 1 + 2, 1 + 2 + 3, 1 + 2 + 3 + 4, ...
Each term is the sum of the consecutive numbers from 1 to that number.
<u>The nth term is the sum of the first n numbers:</u>
- aₙ = 1 + 2 + 3 + ... + n
- aₙ = 1/2n(1 + n) (formula for sum of the n terms of arithmetic progression with the first term of 1 and common difference of 1)
- aₙ = n(n + 1)/2
1) The number of circles in the nth pile is n(n + 1)/2
2) When n tends to infinity the number of circles tends to infinity
