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klio [65]
3 years ago
13

the volumes of two spheres are 729 in3 and 27 in3. what is the ratio of their radii, rounded to the nearest whole number?

Mathematics
1 answer:
MaRussiya [10]3 years ago
5 0
The volumes of spheres are proportional to R³. So their 'R's
are proportional to ∛their volumes.

(729/ 27) = 27

∛27 = <u>exactly 3</u> .  No rounding required.
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Can someone please help first answer gets brainlist
OLga [1]

Answer:

3/5

Step-by-step explanation:

0.6 is actually 6/10 as a fraction. You divide bot the 6 and the 10 by 2 to get 3/5

3 0
2 years ago
Kendra earns $11.60 per hour working at the movie theater. Each week, she donates
Zanzabum

Answer: $9.86

Step-by-step explanation:

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3 0
3 years ago
Solve the simultaneous equation<br> X+3y=13<br> X-y=5
Andru [333]

Answer:

x = 7

y = 2

Step-by-step explanation:

In the above question, we are given 2 equations which are simultaneous. To solve this equation, we have to find the values of x and y

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x - y = 5...........Equation 2

From Equation 2,

x = 5 + y

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x + 3y = 13 ........ Equation 1

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5 0
3 years ago
A flying squirrel jumped from a tree 11 feet in the air at an initial velocity of 9 feet per sencond. The equation h=-2t^2+9t-11
vovikov84 [41]
This must be on the moon as the acceleration due to gravity in this equation must be around 1/8 that on earth. :)  Anyway...

h=-2t^2+9t+11

A)

dh/dt=-4t+9, when velocity, dh/dt=0, it is the maximum height reached

dh/dt=0 only when 4t=9, t=2.25 seconds

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B)

As seen in A), the time of maximum height was 2.25 seconds after the squirrel jumped.

C)

The squirrel reaches the ground when h=0...

0=-2t^2+9t+11

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-2t(t+1)+11(t+1)=0

(-2t+11)(t+1)=0, since t>0 for this problem...

-2t+11=0

-2t=-11

t=5.5 seconds.

4 0
3 years ago
Read 2 more answers
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Ivanshal [37]

Answer:

15 dimes and 10 nickels

Step-by-step explanation:

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0.50 + 1.50 = 2.00

8 0
3 years ago
Read 2 more answers
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