The sum of the first n odd numbers is n squared! So, the short answer is that the sum of the first 70 odd numbers is 70 squared, i.e. 4900.
Allow me to prove the result: odd numbers come in the form 2n-1, because 2n is always even, and the number immediately before an even number is always odd.
So, if we sum the first N odd numbers, we have
The first sum is the sum of all integers from 1 to N, which is N(N+1)/2. We want twice this sum, so we have
The second sum is simply the sum of N ones:
So, the final result is
which ends the proof.
Answer:
I think it is the first number line
Step-by-step explanation:
I think it is this one because it is the only one that shows the placement of -1 and -5. I am sorry if the answer is wrong.
Answer:
you put 2 apples in each basket
Step-by-step explanation:
draw 6 baskets and put two apples in each one to add up to 12
Answer:
B
Step-by-step explanation:
I picked B. The frequency has 4 things from 0-4, 5 things from 5-9, 3 things from 10-14, and 2 things from 15-19. I counted them for you
Hope this helps please mark brainliest :D
Divide 204 to 10.2 or add and then u can get your final answer, you can also multiple.
