(x^2) - 16 / x+4 = (x-4)(x+4) / (x+4) = x-4, x not equal to -4
D is the answer.
X would equal 81 because the square root of 81 is 9.
9 x 9 = 81
Answer:
720 possible ways
Step-by-step explanation:
The gold is awarded to the first position, the silver is awarded to the second position while the bronze is awarded to the third position.
The first position can be taken by any of the 10 runners
Now, the second position can be taken by remaining 9 runners
while the third position can be taken by the renaming 8 runners.
Thus, the number of ways in which these medals can be awarded = 10 * 9 * 8 = 720 ways
Cause you have the slashes and 2/4/5/6/7and 3/4/5/6/7
He will need 528 pieces of glass.
Hope this helps!
Please mark as brainliest because it helps me out a lot :)
