Notice that

so that

We have


so that

You might already know that



so from these formulas we get



If you don't know the formulas mentioned above:
- The first one should be obvious; if you add
copies of 1 together, you end up with
. - The second one is easily derived: If
, then
, so that
or
. - The third can be derived using a similar strategy to the one used here. Consider the expression
, and so on.
Answer:
63 units
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
Since the graph intersects the x-axis at 2 points, it has 2 solutions which means that the discriminant is greater than 0. The only option that satisfies this is 10.
Answer:
There are 20 stops at the tour.
Step-by-step explanation:
Let total number of stops at the tour be x
30% of the stops is 6 stops (historic homesl)of the total stops
30/100× total number of stops = 6
30/100 ×X=6
Cross multiply
100×6=30X
600/30 = X
20=X= Total number of stops at the tour.