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Vsevolod [243]
3 years ago
6

It has been estimated that 1000 curies of a radioactive substance introduced at a point on the surface of the open sea would spr

ead over an area of 40,000 km2 in 40 days. Assuming that the area covered by the radioactive substance is a linear function of time t and is always circular in shape, express the radius r of the contamination in terms of t.
Mathematics
1 answer:
Zanzabum3 years ago
8 0
<span>1000 meters per second is the answer 

radius =25.23Km

(t)= days 

</span>
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Complete the table so that the cost per banana remains the same.
Aneli [31]

Step-by-step explanation:

No. of banana    Cost      Unit price

4                            2            0.50

6                            3             0.50

7                           3.5           0.50

20                         10            0.50

20                          10             0.50

33                          16.50        0.50

Cost = No of banana x unit price

Cost = 4 x 0.50 = 2

Cost = 6 x 0.50 = 3

Cost = 7 x 0.50 = 3.50

Cost = 20 x 0.50 = 10

No of banana = Cost / Unit price

No of banana = 10 / 0.50 = 20

No of banana = 16.50 / 0.50 = 33

3 0
3 years ago
Can someone explain this to me?<br><br> Please solve step by step. I don't know how to do this.
ololo11 [35]
Given,


y = -3x+1 (EQ1)
y = 2x-4 (EQ2)


Equate EQ1 and EQ2

EQ1 = EQ2
-3x+1 = 2x-4
-3x-2x = -4-1
x = 1

y = -3x+1
y = -3(1)+1
y = -3+1
y = -2

(1, -2)
~B

6 0
3 years ago
The volume of this cylinder is 20,403.72 cubic yards. What is the radius? Use ​ ≈ 3.14 and round your answer to the nearest hund
MakcuM [25]
The formula for the volume of a cylinder is V=3.14r^2(h).
So substituting the volume: 20,403.72=3.14r^2(h).

To solve for ‘r’, divide both sides by 3.14h
r^2=6,498/h
Then find square root of both sides
r= sqrt(6,498/h)
Since ‘h’ is not specified here, it cannot be solved further.
4 0
2 years ago
An ant weigh 0.000003 kg. How much would 2 ants weigh, expressed in scientific notation?
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The correct answer is 6*10^-6 ..........................
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3 years ago
Write an equation of the line that passes through the given point with the given slope
Inessa05 [86]
Did Yu Ever Find The Answer I got the same question??
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