Answer: 0.03855
Step-by-step explanation:
Given :A population of skiers has a distribution of weights with mean 190 pounds and standard deviation 40 pounds.
Its maximum safe load is 10000 pounds.
Let X denotes the weight of 50 people.
As per given ,
Population mean weight of 50 people =
Standard deviation of 50 people
Then , the probability its maximum safe load will be exceeded =
Thus , the probability its maximum safe load will be exceeded = 0.03855
Answer:
0.8
Step-by-step explanation:
0.54 - 0.46 = 0.8
i hope this is right.. not too sure
Answer:
a = 3/2 b
When we simplify 3/2, we get 1.5
a = 1.5b
Step-by-step explanation:
The given equation 7a - 2b = 5a + b
Isolate the variables.
Subtract 5a from both sides, we get
7a - 5a - 2b = 5a - 5a + b
2a - 2b = b
Now add 2b from both sides, we get
2a - 2b + 2b = b + 2b
2a = 3b
Dividing both sides by 2, we get
a = 3/2 b
Hope this will helpful.
Thank you.
Answer: y Y/40 should be your answer
Answer = 16 birds
1. Write out your equations
X = birds
Y= cats
x + y = 19
2.50x + 7.50y = 62.50
2. Isolate one variable.
x + y = 19
x = 19 - y
3. Plug this in as the variable in the other equation. Then, solve.
2.5(19 - y) + 7.5y = 62.5
47.5 - 2.5y + 7.5y = 62.5
-2.5y + 7.5y = 15
5y = 15
y = 3 (cats)
4. Solve for the other variable.
We know there were 19 animals in total on Monday. Since there were 3 cats, there must be 16 birds.
5. Double check by plugging the numbers into the original equations.
16 + 3 = 19
19 = 19 (true)
2.5(16) + 7.5(3) = 62.5
40 + 22.5 = 62.5
62.5 = 62.5 (true)