Answer:
15
Step-by-step explanation:
Pythagorean theorem: the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse.
C = the square root of A squared + B squared.
plug in the numbers
C = the square root of 9 squared + 12 squared = 15
Answer:

Step-by-step explanation:
<u>Vertical Throw</u>
It refers to a situation where an object is thrown verticaly upwards with some inicial speed v_o and let in free air (no friction) until it completes its movement up and finally returns to the very same point of lauch. The only acting force is gravity
The projectile formula is given as

where t is time in seconds, h is the height in feet and v is the speed in ft/sec
We are required to find the time t where h=120 ft, knowing 

Rearranging

This is a second-degree equation which will be solved with the formula



Two solutions are obtained

Both solutions are possible because the ball actually is at 120 ft in its way up and then when going down
If B was missed typed and is suppose to say 11h + 6=39 then that is your answer but if not none of these are correct
Answer:
Step-by-step explanation:
There isn't one. The first term is x^4.
The other two are stated in terms of k. There is nothing common here.
You can do 2 of the three. Terms 2 and 3 have a common factor of 4k, so what you can get is
x^4 - 4k(k^2 - 1)