Answer:
30
Step-by-step explanation:
25£ : 650 rubles
x£ : 780 rubles
25/x = 650/780
(cross multiply)
650x = 25×750
650x = 18 750
divide 18 750 by 650
which is = 30
thus x = 30
7.87g/2.5cups= 3.148 (3.15)
3.15+3.15=6.30
3.15/2=1.575 (1.58)
6.30+1.58=7.88
So approximately 3.15 grams of fat equals 2.5 cups of corn
Answer:
If they start moving towards each other simultaneously it will take 5 hours to meet.
Step-by-step explanation:
Motorcycle:
Distance = 540 miles
Speed = 48 mph
Time taken = Distance/Speed = 11.25 hours.
Car:
Distance = 540 miles
Time taken = 11.25 -2.25 = 9 hours.
Speed = Distance/Time = 540/9 = 60 mph
If they start moving towards each other simultaneously, they will travel a combined distance of 540 miles and Let the time be t hours.
We have
48 t + 60 t = 540
108 t = 540
t = 540/108 = 5 hours.
If they start moving towards each other simultaneously it will take 5 hours to meet.
Answer: P(x ≥ 47) = 0.25
Step-by-step explanation:
Since the distribution of the life expectancies of a certain protozoan is normal, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = life expectancies of the certain protozoan.
µ = mean
σ = standard deviation
n = number of samples
From the information given,
µ = 46 days
σ = 10.5 days
n = 49
The probability that a simple random sample of 49 protozoa will have a mean life expectancy of 47 or more days is expressed as
P(x ≥ 47) = 1 - P(x < 47)
For x = 47
z = (47 - 46)/(10.5/√49) = 0.67
Looking at the normal distribution table, the probability corresponding to the z score is 0.0.75
P(x ≥ 47) = 1 - 0.75 = 0.25
