Answer:
?=91 degrees.
Step-by-step explanation:
There is no x- I'll find ? though.
So, angles in a triangle must equal 180.
180-29-62=89. The last angle in the triangle is 89 degrees.
A straight angle is equal to 180 degrees. ? + 89=180.
180-89=91.
?=91 degrees.
Hope this helped!
Answer:
(x + 8)^2 + (y + 13)^2 = 13^2
Step-by-step explanation:
Write out (x - h)^2 + (y - k)^2 = r^2. Recognizing that the center is at
(h, k), with h = -8 and k = -13, and that the radius is 13, we get:
(x + 8)^2 + (y + 13)^2 = 13^2
Answer:
A cardioid
Step-by-step explanation:
A cardioid is a curve in the shape of a heart traced by a point on the circumference of a circle as it rolls around a fixed circle of the same radius.
The equation of vertical cardioid is 
± 
Given the polar curve is 
4 
This is an equation of vertical cardioid.
So, it represents a cardioid.
Answer:
The margin of error for a sample size of 250 is 6
Step-by-step explanation:
The margin of error is given as
1/square root of the sample size
Thus, margin of error for a sapless size of 250 is
1/√250
= 1/15. 811
= 6
