3/7 - 1/7 = 2/7
Hope this helps!
210 is 21 groups of ten. 240 is 24 tens
That answer I C. I hope this helps!!!!
Using the recursion equation, it is found that the value of the 2nd iterate is:

<h3>What is the recursive equation?</h3>
The value of the nth iteration is given by:

The initial estimate is:

Hence, the 1st iterate is given by:

The 2nd iterate is:

Thus, the fourth option is correct.
You can learn more about recursive equations at brainly.com/question/6561461
You are correct there's at least one obtuse angle