Answer:
He reads faster by 8 pages.
Answer:
2nd option
Step-by-step explanation:
using the converse of Pyhagoras' identity
If the square of the longest side is equal to the sum of the squares on the other 2 sides then the triangle is right.
longest side = 100 , then 100² = 10000
60² + 80² = 3600 + 6400 = 10000
then
60² + 80² = 100²
thus the triangle is right
If one side is 8 inches then 8/2 is 4
to fill one face, 4 × 4 = 16
to fill a cube 16 × 4 = 64
Answer: 64 cubes will fit
Answer:

And replacing we got:

And we can find the angle with the inverse cosine function and we got:

Step-by-step explanation:
for this case we can use the following identity:

We can begin finding the norm for each vector and we got:


Now we can find the dot product and we got:

And replacing we got:

And we can find the angle with the inverse cosine function and we got:

Answer:
3
Step-by-step explanation:
18/6 = 3