The answer is 7/1, when you want to know a reciprocal, all you do to the fraction is flip it around. Hope this Helps!
Answer:
option 2nd
Step-by-step explanation:
You've selected wrong one
it's first row, last one
to find the graph is a function or not, it should pass vertical line test.
Draw a vertical line through each graph. It should not cut your graph more than once.
2nd graph from first row is passing vertical line test. so it is a function b
Answer:
19 nails
Step-by-step explanation:
Let's first determine the z-score by using the formula:

Where x=5.03, μ=5, σ=0.03 and so:

We can now use a z-score table to determine that 1.00 is synonymous with 0.8413 meaning 84.13%. This means that 84.13% of the nails are less than or equal to 5.03 inches long. Therefore, since we know 100% = 1 in decimals we can determine that the length greater than 5.03 inches is 1-0.8413=0.1587. This means that 15.87% of the 120 nails are greater than 5.03 inches long.
Finally, we can determine how many nails are greater than 5.03 by determining what is 15.87% of 120 which is:

And so 19 out of the 120 nails are greater than 5.03 inches long.
Answer:
(1,-9)
Step-by-step explanation:
Rewrite in vertex form and use this form to find the vertex
(h,k).