1.) Word form: two hundred thirty-six and seventy-seven thousandths
Expanded notation: 200
+ 30
+ 6 + 0.0 + 0.07 + 0.007
There are no underlines?
3.) tenth: 7.3 hundredth: 7.31 thousandth: 7.305 whole number: 7
4.) Estimate: 10,400
Answer is 10,417
I'm guessing the sum is supposed to be

Split the summand into partial fractions:


If
, then

If
, then

This means

Consider the
th partial sum of the series:

The sum telescopes so that

and as
, the second term vanishes and leaves us with

If, for example, you had x on one side and x on the other, then subtracting x from both sides "disappears" x. If no other power of x shows up on either side, then your equation either has no solution or is always true.
Answer:
2+2
Step-by-step explanation:
2 + 4!
3-5
3_4
3-6
2-5
2+5
2_3
2-5