It is given out of 20 moviegoers 8 people purchased popcorn to eat .
The question is asking to find if a theater has 80 people in it, how many should you expect to have purchased popcorn .
If the number of moviegoers increases then expected people who will buy popcorn will also increase.
We can form a proportion.Let x be the number of people who will buy popcorn when moviegoers are 80 in number.
Cross multiplying
20x=80(8)
20x=640
Dividing by 20 both sides
x= 32.
Option C that is 32 is the right answer.
Answer:
$1.25
Step-by-step explanation:
2 × $1 = $2
4 × 1 = 4
1 × 1 = 10
$2 + 4 + 10
$2.14
$2.14 - $0.89
$1.25
Answer:
1) 12 units^2
2) 4 units^2
3) 2units^2
Step-by-step explanation:
count the squares
The quotient of 3 by 1/ 6 and that of 3/4 by 1/ 8 is 1/2 and 4 respectively
<h3>How to find the quotient</h3>
From the given equation, we have to find
= 3/4 ÷ 1/8
First , we take the denominator of the second fraction to be the numerator, we have
=
Multiply through
=
=
To find the quotient of 3 by 1/6
=
=
=
Thus, the quotient of 3 by 1/ 6 and that of 3/4 by 1/ 8 is 1/2 and 4 respectively
Learn more about quotient here:
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Answer:
The margin of error at 90% confidence is 0.5133 gram.
Step-by-step explanation:
Margin of error (E) = (critical value × sample standard deviation) ÷ sqrt(n)
sample standard deviation = 1.5 grams
confidence level = 90% = 0.9
significance level = 1 - C = 1 - 0.9 = 0.1 = 10%
n (sample size) = 25
degree of freedom = n - 1 = 25 - 1 = 24
critical value (t) corresponding to 24 degrees of freedom and 10% significance level is 1.711
E = (1.711×1.5) ÷ sqrt(25) = 2.5665 ÷ 5 = 0.5133 gram