The sample size should be 31.
We use the formula
To find the z-score for 99% confidence:
Convert 99% to a decimal = 0.99
Subtract from 1: 1-0.99 = 0.01
Divide by 2: 0.01/2 = 0.005
Subtract from 1: 1-0.005 = 0.995
Using a z-table (http://www.z-table.com) we can see that this value falls between 2.57 and 2.58; we will use 2.575. Using this for z, our value for σ and our value for E, we have:
3x+22.5 = 69.75
-22.5 -22.5
3x = 47.25
/3 /3
x = 15.75
The price of each shirt before tax is $15.75
Since we have a transverse line that cuts through the straight line parallel to the height, then we can see that the angles are divided into two sections.
We also have vertically opposite angles, since the angle sum of a straight line is 180°. We have perpendicular lines since we are given a 90° angle. Thus, we know the missing angle is 45°.
Thus, 45 + x = 180
x = 135°
Answer:
Polynomials in one variable are algebric rcpressions that consist of terms in the form axn a x n where n id a non-negayive(i.e positive or zero)integer and a is a real number and is called the coefgicient of the term.The degree of polynomial in ine variable is the largest exponent in the polynomial.
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