Answer:
0.6x = 87
Step-by-step explanation:
Hi, to answer this question we have to write en equation:
We have to multiply the variable x by the percentage given (60%) in decimal form (divided by 100). That expression must be equal to 87.
Mathematically speaking:
x (60/100) = 87
0.6x = 87
Feel free to ask for more if needed or if you did not understand something.
If all 25 questions are different,
When order of selection counts:
P(25,7)
=25!/(25-7)!
=15511210043330985984000000/6402373705728000
=2422728000
When order of selection does not count count:
C(25,7)
=25!/(7!*(25-7)!)
=15511210043330985984000000/(6402373705728000*5040)
=480700
Answer:allison
Step-by-step explanation:
There is a 25% decrease because the decrease is 30, which is 25% of 120.
Answer:
c = 5 cm
Step-by-step explanation:
Use Pythagorean Theorem
3^2 + 4^2 = x^2
9 + 16 = x^2
25 = x^2
x = 5
