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nasty-shy [4]
3 years ago
11

I need help with one math problem

Mathematics
1 answer:
Troyanec [42]3 years ago
4 0

y=5x because you move two points up the y-axis

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Cone a and cone b both have a height of 5 in. The volume of cone a is 20.9cubic in, the volume of cone b is 4 times the volume o
Greeley [361]

Answer: two times

Step-by-step explanation:

Given

height of cone A and B  h_a=h_b=5\ in.

The volume of cone A  V_a=20.9\ in.^3

The volume of cone B is 4 times of cone A

the volume of a cone is  \frac{1}{3}\pi r^2h

The volume of cone A

V_a=\dfrac{1}{3}\pi r_a^2h_a=20.9\quad \ldots(i)

The volume of cone B

V_b=\dfrac{1}{3}\pi r_b^2h_b=4\times 20.9\quad \ldots(ii)

divide (i) and (ii) we get

\Rightarrow \dfrac{r_a^2}{r_b^2}=\dfrac{1}{4}\\\Rightarrow \dfrac{r_a}{r_b}=\sqrt{\dfrac{1}{4}}=\dfrac{1}{2}\\\Rightarrow \dfrac{d_a}{d_b}=\dfrac{1}{2}\\\Rightarrow d_b=2d_a

thus, diameter of cone B is twice the diameter of A

4 0
3 years ago
Use the arc length formula and the given information to find r. Show your work for full credit. s = 8.1 ft θ = (3.14/3)rad r = ?
VladimirAG [237]
This question is simple I'm a little confused on the specifics so I will try my best to help.

s=θ(r)
arc length = angle x radius
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r =  (\pi /3)/2.46888
r = .425m
4 0
4 years ago
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Please help!! QUESTION IS BELOW
Andrew [12]

Answer:

Step-by-step explanation:

√((5-1)²+ (4 - (-6))²

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8 0
2 years ago
Work out the length of CD <br> Answer to 3 significant figures
vladimir1956 [14]

Answer:

26

Step-by-step explanation:

I can  be wrong but i most likely sure it is correct because a triangle is 180 degrees you have to add 102 with 52 take that total and subtract it with 180 to find that angle is what you need to find the length. Again i am not sure but might be right.

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4 years ago
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−4y−4+(−3)<br> i need help solving this
ololo11 [35]

Answer: The answer is negastive 11 although I am not one thousand percent sure that this is the answer, if it is not the correct anser then please tell me and I can get the corecct anwer for you!

4 0
3 years ago
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