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Phantasy [73]
3 years ago
9

Need a problem answered pls help

Mathematics
2 answers:
vfiekz [6]3 years ago
8 0
The formula for the volume of a cone is V =PI x r^2 x h/3

r is given as as 8 and h is given as 63.

V = PI x 8^2 * 63/3

V = PI x 64 x 21

V = PI x 1344

Volume = 1344 PI cu. units.
 The answer is D.

insens350 [35]3 years ago
7 0
I think the answer is B
You might be interested in
A sequence is defined recursively by the following rules: f(1)=3f(n+1)=2⋅f(n)−1 Which of the following statements is true about
Radda [10]

Answer:

f(2)=5

f(5)=33

Step-by-step explanation:

The given formula, that recursively defines the sequence is

f(1) = 3 \\ f(n + 1) = 2f(n) - 1

When n=1, we obtain;

f(1+ 1) = 2f(1) - 1 \\ f(2) = 2 \times 3 - 1 \\ f(2) = 6 - 1 \\ f(2) = 5

When n=2, we get:

f(2+ 1) = 2f(2) - 1 \\ f(3) = 2 \times 5 - 1 \\ f(3) = 10 - 1 \\ f(3) = 9

When n=3,

f(3 + 1) = 2f(3) - 1 \\ f(4) = 2f(3) - 1 \\ f(4) = 2 \times 9 - 1 \\ f(4) = 18 - 1 \\ f(4) = 17

When n=4

f(4 + 1) = 2 f(4) - 1 \\ f(5) = 2 \times 17 - 1 \\ f(5) = 34 - 1 \\ f(5) = 33

When n=5,

f(6) = 65

4 0
3 years ago
Please help me thank you. <br><br> I have 3 questions.
weeeeeb [17]
The first one is D because c represents the x and b represents the y. For the second one:
38(2) = 76
180-76 (this is the sum of the unknown measures) 
104/2 (finds the measure of each angle)
52
I am unsure of the final one though. 
Hope this helps!
5 0
3 years ago
The students in a furniture making class make a tabletop shaped like the figure shown. The tabletop has squares cut out of the c
Pie
Do you have a picture to go with this? I can't help without the picture :(
7 0
3 years ago
Is it linear or exponential?? I will mark as brainliest if correct!!​
iogann1982 [59]

Answer

Exponential

Step-By-Step Explanation

put it on a graphing sheet

4 0
3 years ago
Help me solve this please
damaskus [11]

1) A quadratic will have no real roots when its discriminant is negative


0 = ax^2 + bx + c = x^2 + 2k x + (4k-3)


d = b^2 - 4ac =  (2k)^2 - 4(1)(4k-3) = 4k^2 - 16k + 12 < 0


Dividing by 4,


k^2 - 4 k + 3 < 0 \quad\checkmark


We have a positive coefficient on k^2 so this parabola is a CUP (concave up positive) so has a minimum at the vertex. If the vertex y value is less than zero, the inequality will be true in the range between the zeros.


(k-3)(k-1)


That's true for


1 < k < 3


2) We look for the meet of the line and the parabola:


2x + k + 2 = 2x^2 + (k+2)x + 8


0 = 2x^2 + kx + (6-k)


For two intersections we need a positive discriminant:


k^2 - 4(6-k)(2) > 0


k^2 + 8k - 48 > 0


(k+12)(k-4) > 0


That's means two negative or two positive, so


k < 12 or k > 4


6 0
3 years ago
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