Answer:
X^2 - 49 .
Step-by-step explanation:
(X+7)(X-7)
= X(X-7) + 7(X-7)
= X^2 - 7X + 7X - 49
= X^2 - 49 .
Step-by-step explanation:
3(days) × 24(hours) = 72(hours)
9/72 ×100 = 12.5 %
Answer:
![12\ ft](https://tex.z-dn.net/?f=12%5C%20ft)
Step-by-step explanation:
The question in English is
A 13-foot long staircase rests on a wall, so that the base of the staircase is separated from the wall, at floor level, at a distance of 5 feet. Calculate the height of the ladder on the wall. Remember that in a right triangle, the hypotenuse, squared, is equal to the sum of the squares on the other sides. If necessary, approach the tenth foot
Applying the Pythagoras Theorem
![13^{2} =5^{2}+h^{2}](https://tex.z-dn.net/?f=13%5E%7B2%7D%20%3D5%5E%7B2%7D%2Bh%5E%7B2%7D)
Solve for h
![h^{2}=13^{2}-5^{2}](https://tex.z-dn.net/?f=h%5E%7B2%7D%3D13%5E%7B2%7D-5%5E%7B2%7D)
![h^{2}=144](https://tex.z-dn.net/?f=h%5E%7B2%7D%3D144)
![h=12\ ft](https://tex.z-dn.net/?f=h%3D12%5C%20ft)
Answer:
3/10
Step-by-step explanation:
Since you are only choosing a marble in the bag and there are three green marbles to choose from out of the 10 marbles combined, you will have a 30% chance of getting a green marble in which you have 3/10 as your probability.
A≈50.27cm^{2}. hope this helps and happy birthday buddy