Answer:
x = 1/2
Step-by-step explanation:
8x-(4x-3)=5
Distribute the minus sign
8x -4x +3 = 5
Combine like terms
4x+3 =5
Subtract 3 from each side
4x+3-3 = 5-3
4x = 2
4x/4 = 2/4
x = 1/2
It is given that getting boy or girl is equally likely. The chance of getting boy or girl on birth is 1/2
P(Boy) = P(Girl) =0.5
If a couple plans to have 8 children then probability of getting at least one girl is
P(Al least one girl out of 8 children) = 1 - P(No girl in 8 children)
= 1 - P( Getting all boys in 8 children)
= 1 - (0.5)^8
= 1 - 0.0039
P(At least one girl out of 8 children) = 0.9961
The probability of getting at least one girl out of 8 children is 0.9961.
The probability 0.9961 is high enough for the couple to be very confident that they will get at least one girl in 8 children
The third option is right. Raman rode 3miles/hr slower than Hector
Step-by-step explanation: Distance covered by Raman is 45miles In 3hours., his speed is 15miles/hr
Raman: 45=15×3 (45miles in 3hrs)
Hector: y=18× (54miles In 3hrs)
Distance = speed ×time