An area rug in Rachel's room is shown below. A rectangle that is one hundred forty-four inches long and one hundred eight inches
1 answer:
Answer:
42 feet
Step-by-step explanation:
1) remeber how 1 foot=12 inches
we need to find "x" feet for 144 inches
so
2) cross multiply
144=12x
divide both sides by 12
12=x
so 144 inches is 12 feet, we need to do the exact same thing for the width
108=12x
9=x
the length is 12 feet and width is 9 feet
to find perimeter:
2(l)+2(w)
2*12+2*9
24+18=42
Hope this helps!
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Answer:
Step-by-step explanation:
Move all terms to one side.
Use the Quadratic Formula.
,
Answer:
P(X ≤ 94) = 0.09012
From what we observe; There is a probability of less than 94 people who voted for the referendum is 0.09012
Comment:
The result is unusual because the probability that p is equal to or more extreme than the sample proportion is greater than 5%. Thus, it is not unusual for a wrong call to be made in an election if the exit polling alone is considered.
Step-by-step explanation:
From the information given :
An exit poll of 200 voters finds that 94 voted for the referendum.
How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.52? Based on your result, comment on the dangers of using exit polling to call elections.
This implies that ;
the Sample size n = 200
the probability p = 0.52
Let X be the random variable
So; the Binomial expression can be represented as:
X Binomial ( n = 200, p = 0.52)
Mean = np
Mean = 200 × 0.52
Mean = 104
The standard deviation =
The standard deviation =
The standard deviation =
The standard deviation =
The standard deviation = 7.065
However;
P(X ≤ 94) because the discrete distribution by the continuous normal distribution values lies in the region of 93.5 and 94.5 .
The less than or equal to sign therefore relates to the continuous normal distribution of X < 94.5
Now;
x = 94.5
Therefore;
z = −1.345
P(X< 94.5) = P(Z < - 1.345)
From the z- table
P(X ≤ 94) = 0.09012
From what we observe; There is a probability of less than 94 people who voted for the referendum is 0.09012
Comment:
The result is unusual because the probability that p is equal to or more extreme than the sample proportion is greater than 5%. Thus, it is not unusual for a wrong call to be made in an election if the exit polling alone is considered.