Manipulate the equation to get it in one of the following forms:
or
Subtract 3y from both sides of the equation:
Divide by 6 on both sides of the equation (reduce):
This is a parabola that opens down and the value of p =
.
The vertex is at the origin (0, 0)
Focus: (0, 0 + p) ⇒
Directrix: y = 0 - p ⇒
Axis of Symmetry: x = 0
So the first one, 1.2 >11/5. and the second one 1/3> 1/2
She curled an 8 inch by 10 inch rectangular piece of paper to form an open cylinder. A height of that cylinder is h = 10 in. Then 8 inches will represent the circumference of the base of the cylinder ( or the circumference of the circle, which represents the base ). Therefore: C = 2 r π, or: 8 = 2 r π. Now we can also calculate the radius of the base:
r = 8 : 2 π = 8 : 2 * 3.14 = 8 : 6.28 ≈ 1.27 in.
Answer: 8 inches will be the circumference of the base of the cylinder.
Answer:
C
Step-by-step explanation:
Answer:
4.5 hour and 2 hour
Step-by-step explanation:
Given: The mean number of hours per day spent watching television, according to a national survey, is 3.5 hours, with a standard deviation of two hours.
To Find: If each time was increased by one hour, what would be the new mean and standard deviation.
Solution:
let the total numbers entries of hours in survey be = 
each entry in survey be = 
mean of survey is = 
=
standard deviation is = 
= 
if each entry in survey is increased by one hour then,
each new entry in survey is = 
the new mean is
= 
+
= + 1=
now,
standard deviation is 
putting values,
=
=2
new mean and standard deviation are and
