-2x(x+5)
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Answer:
Step-by-step explanation:
- Probability of chocolate ice cream = 1/4
- Probability of chocolate chips = 1/3
- Probability of waffle cone = 1/2
Probability of chocolate ice cream in a waffle cone with chocolate chips:
- 1/4*1/3*1/2 = 1/24 or 4.17%
Answer:
A dime is worth 2 nickels.
let no of dimes be x
let no of nickles be y
so as per the data mentioned in the question , x=2*y-10
total amount = $2.75
so total amount should comprise of nickels and dimes
x*dimes + y*nickels = $2.75
x*( 2 nickels)+ y *nickels = $2.75
=> nickles( 2x+y) = $ 2.75
but 20 nickels = 1 dollar
nickles(2x+y) = 2.75*20 nickels
cancelling nickles on both sides
2x+y = 55
already we know that x= 2y-10
so 2(2y-10) +y= 55
4y-20+y=55
5y -20 =55
add 20 on both sides
5y-20+20=55+20
5y=75
divide with 5 on both sides
5y/5 =75/5
y= 15
so x= 2y-10
x= 2*15-10
x= 30-10
x= 20
so # of dimes =20
# of nickels =15
5 of the 6 exits were men, so the experimental probability that a man exits the room is 5/6.
So P(-0.7537 < z < 1.3190) = 0.9063 - 0.2254 = 0.6809
