Answer:
84 in^2
Step-by-step explanation:
Answer:12
Step-by-step explanation:
np
The formula of combination is
We have
and
Hence, there are 1001 ways of arranging 10 records from 14 records
It appears that the Pythagorean theorem can be applied to this problem
(distance to shadow)² = (height of building)² + (length of shadow)²
(38 m)² = (height of building)² + (28 m)²
660 m² = (height of building)²
Then the height of the building is
height of building = √660 m ≈ 25.7 m
Since the denominator cannot be zero, you can set 4z+1=0 to find the excluded values.
4z+1=0
4z=-1
z=-1/4
And thus, z cannot equal -1/4