Answer:
its 16
Step-by-step explanation:
rotation doesnt effect length
Answer:
5.9
Step-by-step explanation:
The mean means arithmetic average (some people just say average here).
The average of 4 numbers is the sum of those 4 numbers divided by the number of numbers which is 4 in this case.
So we have this formula:

Multiply both sides by 4:

Simplify:

Subtract 13.3 on both sides:

Simplify:

Answer:
C
Step-by-step explanation:
To evaluate f(g(7)), substitute x = 7 into g(x), then substitute the result into f(x)
g(7) = (2 × 7) - 5 = 14 - 5 = 9, then
f(9) = 3(9)² - 4 = 243 - 4 = 239 → C
3. {6,9,15)
for these u have use Pythagoras theorem
Answer:
7%
Step-by-step explanation: