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Anni [7]
3 years ago
13

HELP ASAP The mass of a radioactive substance follows a continuous exponential decay model. A sample of this radioactive substan

ce has an initial mass of 4366 kg and decreases continuously at a relative rate of 4% per day. Find the mass of the sample after six days
Mathematics
1 answer:
liq [111]3 years ago
5 0

Answer:

3318.2

Step-by-step explanation:

Since you first have to find out 4% of 4366 (174.64), then what you do is write an equation that states 4366-(174.64*6), then you get your answer :)

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57

Step-by-step explanation:

exterior angles add up to 360 so'

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24x-24=360

24x=384

x=16

10(16)-37

160-37

123

180-123

= 57

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A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and
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3 years ago
Candice spent 5 1/4 hours doing her homework. Her brother, Ronald, spent 1/2 that number of hours doing his homework. How many h
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4 years ago
1. Petra tenía 49 canicas azules y dos canicas rojas. ¿Cuántas canicas deberá quitar Petra para qu
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6 0
3 years ago
Read 2 more answers
Recall the equation for a circle with center (h,k) and radius r. At what point in the first quadrant does the line with equation
makkiz [27]

Answer:

(2.236,9.472).

Step-by-step explanation:

The standard form of a circle is

(x-h)^2+(y-k)^2=r^2     ...(1)

where, (h,k) is center and r is radius of the circle.

It is given that radius of the circle is 5 and center at (0,5). So, the equation of circle is

(x-0)^2+(y-5)^2=5^2

x^2+(y-5)^2=25     ...(2)

The given equation of line is

y=2x+5       ...(3)

We need to find the intersection point of line and circle in first quadrant.

On solving (2) and (3), we get

x^2+((2x+5)-5)^2=25

x^2+(2x)^2=25

x^2+4x^2=25

5x^2=25

x^2=5

x=\pm \sqrt{5}=\pm 2.236

At x=2.236,

y=2(2.236)+5=9.472  

At x=-2.236,

y=2(-2.236)+5=0.528  

It means line intersect the circle at (2.236,9.472) and (-2.236,0.528).

In first quadrant both coordinates are positive.

Therefore, the required point is (2.236,9.472).

6 0
3 years ago
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