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Sidana [21]
3 years ago
14

Find the volume of a sphere with radius 9. Use 3.14 for pi. Question 7 options: A. A. 3,052.08

Mathematics
1 answer:
laila [671]3 years ago
4 0
Volume of a sphere = (4/3)πr³                    π ≈ 3.14,  r = 9

Volume, V = (4/3)πr³ 

V ≈ (4/3)*3.14*9³

V ≈ (4/3)*3.14*9*9*9              Use calculator

V ≈ 3052.08

Option A.

Hope this helps.
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3tanx3x=3 square rooted<br>​
torisob [31]

Answer:

\tan 3x=\frac{\sqrt{3} }{3} =\frac{1}{\sqrt{3} } =tan\frac{\pi }{6} =tan (n\pi +\frac{\pi }{6} )\\3x=n\pi +\frac{\pi }{6} =\frac{(6n+1)\pi }{6} \\x=\frac{(6n+1)\pi }{18} \\where~x~is~an~integer.

Step-by-step explanation:

tan 3x=\frac{\sqrt{3} }{3} =\frac{1}{\sqrt{3} } =tan\frac{\pi }{6} =tan (n\pi +\frac{\pi }{6} )\\3x=n\pi +\frac{\pi }{6} =\frac{(6n+1)\pi }{6} \\x=\frac{(6n+1)\pi }{18} \\

where~x~is~an~integer.

6 0
2 years ago
Evaluate the algebraic expression 18 + (- 31) =
frosja888 [35]

Answer:

-13

Step-by-step explanation:

8 0
3 years ago
BEST ANSWER EARNS BRAINLIEST!
Lady bird [3.3K]
Please mark brainliest 3 more to rankup.

so is how I would solve this is one corner at a time. Since these are all triangles you will solve the area of a corner and divide it by 2. Then you will have the area of a corner.

(7.5 x 5) /2= 18.75
(7.5 x 14) /2=52.5
Mirror this on the other side because they are the same on the other side and then add them all together

(18.75 x 2) + (52.5 x 2) = 142.5

Answer is A
142.5
3 0
3 years ago
Please help me find out if this is increasing or decreasing !!!<br> please explain if you can!
Vikentia [17]

Answer:

Decreasing

Step-by-step explanation:

If I started at the y point and follow the graph line. Then you will see that I will be going down the graph.

Hope this helped

4 0
3 years ago
How do you show the work to come to the conclusion that 2 equivalent ratios for 12/14 are6:7and 24:28
Ad libitum [116K]
Reduce fractions to their most simple form
12/14 you can divide both up and bottom by 2
12/14→6/7

24/28, both up and bottom can be divided by 4
24/28→6/7
6/7=6/7=6/7
8 0
3 years ago
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