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Ad libitum [116K]
3 years ago
6

If the surface areas of two spheres are in ratio 16:9, then their volumes will be in the ratio​

Mathematics
1 answer:
Anna11 [10]3 years ago
8 0

Answer:

64 : 27

Step-by-step explanation:

If linear ratio is a : b , then

area ratio = a² : b²

volume ratio = a³ : b³

Given area ratio = 16 : 9 , then

linear ratio = \sqrt{16} : \sqrt{9} = 4 : 3

volume ratio = 4³ : 3³ = 64 : 27

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Family Video charges $10 for
Irina18 [472]

Answer:

4 movies, $20

Step-by-step explanation:

Given data

Family Video

charges $10 for a monthly membership and

$2.50 per movie

let the number of movies be x

and the charge for x movies be y

y= 10+2.5x----------1

Babe's  Movies

charges a $12

membership and $2 per

movie.

let the number of movies be x

and the charge for x movies be y

y= 12+2x----------2

equate 1 and 2

10+2.5x= 12+2x

collect like terms

12-10= 2.5x-2x

2= 0.5x

x= 2/0.5

x= 4 movies

put x= 4 in equation 1 or 2

y= 12+2x----------2

y= 12+2*4

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4 0
3 years ago
HURRY PLEASE what's the answer?<br> A<br> B<br> C<br> D
Zarrin [17]

Answer:

x ≤ -11.25 or x > -8.75

Step-by-step explanation:

The graph here shows a disjunction compound inequality, in which either of the statements is true. That is for the compound inequality to be true, either one or the other statement is true. The word "OR" is used in stating this inequality.

On the graph, the directed line to our left has a full circle which starts at -11.25.

This means x ≤ -11.25.

The other directed line to our right has an empty circle, and starts at -8.75.

This means x > -8.75.

✅The compound inequality representing the graph will be written as:

x ≤ -11.25 or x > -8.75

3 0
3 years ago
Need help 8th grade math
Yanka [14]
The answer is the 3rd one
6 0
3 years ago
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Ivahew [28]

Answer:

it is D

Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

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3 years ago
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