ANSWER
B.

EXPLANATION
The volume of a cone is calculated using the formula:

where r=4 units is the base radius of the cone.
and h=21 units is the vertical height of the cone.
We plug in the values to get;


Answer:
relation 1: function
Relation 2: function
relation 3: not a function
relation 4: not a function
Explanation:
There should be no repeating values in the domain for the relation to qualify for a function.
Answer:
1a. x=1/2 1b. x= 4
Step-by-step explanation:
1a. 30x= 16- 2x
(add 2x to both sides)
32x= 16
(divide both sides by 16)
x= 1/2
1b. 2(3x-5)=2x+6
(distribute the 2)
6x-10=2x+6
(add 10 to both sides)
6x=2x + 16
(subtract 2x from both sides)
4x= 16
(divide both sides by 4)
x=4
Answer:
x ≤ 2
Step-by-step explanation:
2 red rose cost $ 18
x flowers cost $ 11x
"At most " means ≤.
11x + 18 ≤ 40
11x ≤ 40 - 18
11x ≤ 22
x ≤ 2
Answer:
B. 4 and 6 in
Step-by-step explanation:
The triangle inequality rule states: the length of a side of a triangle is less than the sum of the lengths of the other two sides and greater than the difference of the lengths of the other two sides.
So for the first qualification, we can eliminate A, C, and D. Therefore the answer is B, 4 & 6 in