Answer:
2/3 = 6/9
Step-by-step explanation:
2 x 3 = 6 so then you have to multiply 3 with 3 which is 9. (because the numerator and denominator should be multiplied by the same number.)
So thats why 2/3 = 6/9 is correct.
We have the mean, μ = 20 and the standard deviation, σ = 4
X ≈ N(20, 4²)
We want P(X<15)
Standardising gives
P(X<15) = P(Z<
)
P(X<15) = P(Z< -1.25) ⇒ When the value of the z-score is negative, we will read the value of z<1.25 on the z-table then subtract the answer from 1
P(X<15) = 1 - P(Z<1.25)
P(X<15) = 1 - 0.8944
P(X<15) = 0.1056
Hence, the probability that pizza takes less than 15 minutes to be delivered is 0.1056 = 10.56%
Answer:
Step-by-step explanation:
studying Math 65
Studying science 50
studying both 35
student are studying in the college are:(65+50)-35=80 students
student studying math only= 65-35=30
student studying science only = 50-25=15
15.00(< or =) 3.50+4.75b so solve by subtracting 3.50 you get 11.50(< or =)4.75b then divide by 4.75 you get 2.42(< or =) b but since you can’t have .42 of a bag of fruit you round down to 2 bags of fruit