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SVETLANKA909090 [29]
3 years ago
10

A sphere's radius is multiplied by 3. How is its surface area affected?

Mathematics
1 answer:
Montano1993 [528]3 years ago
4 0

Answer:

Step-by-step explanation:

For all shapes, the surface area will go up by a factor of 9 (3^2). This is true of spheres, cones, cubes, pyramids, torusses, everything.

The surface area of any body is proportional to the square of any linear dimension. Triple a linear dimension and you get a 9 fold increase in surface area. This is as true for pretzels as it is for spheres and cubes.

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Two bags had 100 kilograms of sugar each. after taking out 3 times as much sugar from bag one than bag two, bag one had half as
Serjik [45]

According to the given statement, we can get the equation:

50 - 3x = 1/2 (50-x)

where x = amount removed from bag two, 3x removed from bag one

 

Then we multiply both sides by 2 (to eliminate the ½)

 

100-6x= 50-x

Add 6x to both sides

100= 50-5x

Then subtract 50 from both sides

50=5x

Lastly, divide by 5

10=x

 

Therefore 10 kg of sugar was removed from bag 2

 

further, 3x= 30, so 30 kg of sugar was removed from bag 1.

 

50-30=20 kg remaining in bag 1.

<span>50-10=40 kg remaining in bag 2.</span>

6 0
4 years ago
Read 2 more answers
What is the final amount if 1015 is decreased by 6% followed by a 19% increase?
sleet_krkn [62]

Answer:

1135.38

Step-by-step explanation:

100%->1015

100-6=94

94%->954.1

--------------------------------------------------

100%->954.1

119%->1135.379

       ≈1135.38

3 0
3 years ago
If (-1, y) lies on the graph of y = 3x+1, then y=<br> 13
kotegsom [21]

Answer:

All of the following points lie on the graph of y = 3x except (0,1)

Step-by-step explanation:

The given equation is y = 3x and we have to find which point among the given points doesn't lie on the graph of this equation.

3 0
4 years ago
Select the correct answer.
andrew-mc [135]
I think the answer would be 8+9
4 0
3 years ago
Help! Help! Help! Help!
PilotLPTM [1.2K]
The correct answer is A) 0

I hope this helps. 

Have a awesome day. :)
4 0
3 years ago
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