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Kitty [74]
3 years ago
7

NEED HELP ANSWER ASAP PLZ 1.the diameter of a sphere is 10.8 . calculate the spheres volume. use 3.14 for pie and round your ans

wer to the nearest tenth.
2.a manufacturer makes decorative Globes out of silver in the shape of a sphere. suppose each sphere has a radius of 1.5 cm. if silver is 8$ per cm^3 how much will it cost to make one solid sphere?.3.14 as pie and do not round answer​
Mathematics
1 answer:
Papessa [141]3 years ago
4 0

Answer:

1. 659.25

Step-by-step explanation:

1. V = \frac{4r^{3} }{3}*pi

   radius = diameter * 0.5 = 10.8 * 0.5 = 5.4

   (4*5.4*5.4*5.4*3.14)/3 = 659.25

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A rope is swinging in such a way that the length of the arc is decreasing geometrically. If the first arc is 18 feet long and th
NemiM [27]

Answer: The length of the second arc is 12 feet.

Step-by-step explanation:

Since we know that

A rope is swinging in such a way that the length of the arc is decreasing geometrically,

Length of first arc = 18 feet

Length of third arc = 8 feet

Let the length of second arc be x

As we know that

\frac{a_2}{a_1}=\frac{a_3}{a_2}\\\\\frac{x}{18}=\frac{8}{x}\\\\x^2=18\times 8\\\\x^2=144\\\\x=\sqrt{144}\\\\x=12

Hence, the length of the second arc is 12 feet.

4 0
3 years ago
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kobusy [5.1K]

Answer:

70 I think but I'm not sure

Step-by-step explanation:

AC=70

4 0
3 years ago
Anastasia is grocery shopping with her father and wonders how much shopping is left to do. "We already have 6 0 % 60%60, percent
Molodets [167]
If there are 12 items adding up to 60%, we want to know how many items more it will take to equal 100% So set up this equation 12/x = .6 then solve for x. x=12/.6 x = 20 now that we know the total you can subtract 12 from 20 and get 8, that is the number of items left on the list.
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3 years ago
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vova2212 [387]

Answer:

im thinking it's experimental or sample space but go with your mindset

Step-by-step explanation:

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8 0
3 years ago
Which expression is equivalent to 7(p+2n)+n?
Illusion [34]
We actually need the choices but oh well, we can simpify and hopefuly it is one of the choices

remember the distributive property
a(b+c)=ab+ac
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7(p+2n)+n
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7p+14n+n
7p+15n is an equivilent expression
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3 years ago
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