What we have here is a problem of proportions. We're assuming that the probabilities - the ratio of rainy days to total days - are equal; 3 is to 20 as <em>something</em> (let's call it <em>r </em>for "rainy days") is to 365. Mathematically, that gives us this equality:
To solve for <em>r</em>, we can simply multiply either side of the equation by 365:
365 and 20 have the factor 5 in common, so we can use that to reduce the fraction to:
So, the number of rainy days, if that pattern continued, would be around 54 3/4 days, or
55, rounded up to the nearest day.
y = 2x - 3
(-1, 1)
-1 = x
1 = y
plug these into your equation.
1 = 2(-1) - 3.
Simplify the right side of the equation
1 = -5.
1 does not equal -5, therefore, your equation does not go through those points.
Your answer should be False
Answer:
Step-by-step explanation:
The equation for the monthly charge has the following format
In which y(x) is the cost in function of the number of kilowatt-hours used(x), a is the price of each killowatt hour and b is the fixed(base) charge.
Base charge of $17.32 per month.
This means that
charge of 7.32 cents per kilowatt-hour
Our answer is in dollars. Each dollar is 100 cents. So 7.32 cents is
Write an equation for the monthly charge y in terms of x, the number of kilowatt-hours used.
Answer:
L=2(e+w)h
Step-by-step explanation:
I would interpret it like this L=(2e+2w)h
Factor out 2 to get L=2(e+w)h
Is there more to the question because this is just giving information for the formula.
Answer:
a) Simple random sample
b) Random sample
c) None of them.
Step-by-step explanation:
a) This would be a simple random sample given that the dice roll is a random method to select the students and the probability of each outcome of the dice is 1/6.
b) This would be a random sample, given that the cards are shuffled, this is a random event. However, there's a condition on how to select the cards (The top ones are chosen) and therefore this can not be a simple random sample since not all cards have the same probability of being selected.
c) This is not a random sample since there is an specific condition on how to choose the students (by their age)