A sample of 30 randomly
selected tomatoes are
picked. The diameter of
each is measured. The
mean diameter is 91mm.
The standard deviation is
8mm.
Assuming normal
distribution, calculate the
99% confidence interval?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2