Hello,
the answer is D (said Al Kashi)
Answer:

And the best answer would be:
b. 0.074.
Step-by-step explanation:
For this case we have the following info given:
represent the number of people who answer yes for the question
the sample size selected
the proportion estimated of people who answer yes
The margin of error is given by:

The confidence level is 90% and the significance would be
and the critical value would be:

And replacing we got:

And the best answer would be:
b. 0.074.
A quadrilateral has 4 angles that add up to 360 degrees. So, to solve for x:
85+150+55=290
360-290= 70
X= 70 degrees
Let <em>x</em> and <em>y</em> be the two numbers.
Their sum is 140, so
<em>x</em> + <em>y</em> = 140
Twice the first number <em>x</em> is 2<em>x</em>. 5 more than this is 2<em>x</em> + 5. This is the value of the second number, so
<em>y</em> = 2<em>x</em> + 5
Substitute this into the first equation and solve for <em>x</em> :
<em>x</em> + (2<em>x</em> + 5) = 140
3<em>x</em> + 5 = 140
3<em>x</em> = 135
<em>x</em> = 135/3 = 45
Then
<em>y</em> = 2*45 + 5 = 95
It's easier to figure it out when both fractions have the same denominator, so let's fix that:
17/40*15/15 is 255/600
8/15*40/40 is 320/600
Notice we are multiplying by a factor of 1 to get equivalent fractions
So 8/15 is bigger
Hope this helped!