Answer:
480,700 sets (first choice)
Step-by-step explanation:
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)
= 480,700
Hope this helps, have a nice day.
Answer:
x=-1
Step-by-step explanation:
w-2=-8-5w
-2=-8-6w
+8 +8
6=-6w
divide 6 in both side
x=-1
hope this help.
Answer:
20x²-3x-2
Step-by-step explanation:
(4x+1)(5x-2)
20x²-8x+5x-2
20x²-3x-2
Answer:
-7.11°F
Step-by-step explanation:
the exchange of gases in the atmosphere
Answer:
$3.50
Step-by-step explanation:
$17.50/5 = $3.50. This means the cost of one book is $3.50.
