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2 years ago

6

Two solid metal spheres have masses of 5 kg and 135 kg respectively. If the radius of the smaller one is 4 cm, find the radius o

f the larger one.

1 answer:

Cerrena [4.2K]2 years ago

8 0

Answer: 12 cm

Step-by-step explanation:

The masses of the spheres are proportional to their volums, and the cube of the ratio is k^3=135/5=27 ==> k=3

The greater radius is 3*4=12 (cm)

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Which statement correctly explains how Mari could find the solution to the following system of linear equations using

just olya [345]

Multiply the first equation by 7 and the second equation by 2, and then add.

Step-by-step explanation:

2f - 5g=-9

-7f + 3g=4

To eliminate any variable , we need to make the coefficients same with different sign and add it

the coefficient of 'f' in first equation is 2

the coefficient of 'f' in second equation is -7

We already have different sign so we make the coefficients same

To make the coefficient same , we multiply the first equation by 7 and second equation by 2

So equation becomes

14f - 35g = -63

-14f + 6g = 8

Now when we add both equations, 'f' gets cancelled

-29g = -55

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3 years ago

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GarryVolchara [31]

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3 years ago

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Answer the following: GCF of 20 & 32 GCF of 45 & 75

Jet001 [13]

Answer:

GCF OF 20 AND 32: 4

Gcf of 45 and 75: 15

Step-by-step explanation:

GcF of 20 and 32

Factors of 20: 1, 2, 4, 5, 10, 20

Factors of 32: 1, 2, 4, 8, 16, 32

COMMON FACTORS: 1, 2, 4

GCF:4

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CommoN factors: 1, 3, 5, 15

GCF:15

HOPE OT HELPED

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3 years ago

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Answer:

W= 5.744

Step-by-step explanation:

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Now required probability <0.10

i.e. $P(\bar X$

Since x bar is normal we find z score for

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Corresponding X score =

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3 years ago

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Hitman42 [59]

${ \red{ \bold{option \: (c)}}}$

Step-by-step explanation:

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1 year ago