Step-by-step explanation:
Number of combinations
= 5C2 * 7C3
= 10 * 35
= 350.
Hence there are 350 possible ways.
P.S.
5C2 = 5! / (2!3!) = 120 / (2 * 6) = 10.
7C3 = 7! / (3!4!) = 5040 / (6 * 24) = 35.
I believe that the answer is n+100- second choice
Answer:
2658936 * 
Step-by-step explanation:
probability that the 20th person visiting the service station to purchase regular gasoline will be the 4th person to purchase regular gasoline without ethanol
probability of people who use regular gasoline without ethanol = 1/15 and will pay more ( $0.40) /gallon
The total number of customer in the service station (number of trials) X = 20
success ( r ) = 4
P = 1/15
The probability that the 20th person/customer visiting the station would be the 4th person to purchase regular gasoline without ethanol
FIND ATTACHED THE DETAILED SOLUTION
The measure is 61 degrees
Answer:
z-3/z+3-z-9/z2+3z
Final result :
3 • (z3 + z2 - z - 3)
———————————
z2
Step-by-step explanation:
Step 1 :
9
Simplify ——
z2
Equation at the end of step 1 :
3 9
((((z-—)+3)-z)-——)+3z
z z2
Step 2 :
3
Simplify —
z
Equation at the end of step 2 :
3 9
((((z - —) + 3) - z) - ——) + 3z
z z2
Step 3 :
Rewriting the whole as an Equivalent Fraction :
3.1 Subtracting a fraction from a whole
Rewrite the whole as a fraction using z as the denominator :
z z • z
z = — = ——
1 z
