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Anna [14]
2 years ago
7

LOL i need help this is due in like 15 minutes and i don't know what to do

Mathematics
1 answer:
strojnjashka [21]2 years ago
6 0

Answer:

A

Step-by-step explanation:

I just saw that the median was 44, and it only displays that for A :P

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Two students were asked to find the value of a $1000 item after 3 years. The item was depreciating (losing value) at a rate of 4
Yuki888 [10]

Answer:

<em>Student 2 is incorrect because he didn't use the formula properly</em>

Step-by-step explanation:

The exponential function is often used to model natural growing or decaying processes, where the change is proportional to the actual quantity.

An exponential decaying function is expressed as:

C(t)=C_o\cdot(1-r)^t

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

The initial value of the item is Co=$1000, the rate of decay is r=40%=0.4, and the time is t=3 years.

Substituting into the formula:

C(3)=\$1000\cdot(1-0.4)^3

C(3)=\$1000\cdot0.6^3

C(3)=$216

Student 2 is incorrect because he didn't use the formula properly

8 0
2 years ago
Given the system of equations, what is the solution?
snow_tiger [21]

Answer:

Its b trust me

Step-by-step explanation:

I did the work lol

5 0
2 years ago
Read 2 more answers
Solve by system of equations:<br> 2x+5y=-11<br> -8x-5y=-1<br> answer like this:<br> ( _,_ )
Eddi Din [679]

Answer:X(2,-3)Y

Step-by-step explanation:

6 0
3 years ago
A dome of a building is in the form of a hemisphere from inside it was whitewashed at the cost of rupees 4989.60 if the cost of
Luda [366]

Answer: 249.48\ m^2; 369.168\ m^3

Step-by-step explanation:

Given

Cost of white-washing =Rs. 4989.60

Rate =20 per meter square

So, inside area of = \dfrac{4989.60}{20}=249.48\ m^2

The surface area of dome= 4\pi\ r^2=249.48

4\times 3.142\times r^2=249.48\\r^2=\frac{249.48}{4\times 3.142}=19.85\\r=4.455\ m

The volume of air in the dome V=\frac{4}{3}\pi r^3

V=\frac{4}{3}\cdot 3.142\cdot (4.45)^3\\V=369.17\ m^3

6 0
2 years ago
How much will you have in 36 months if you invest $75 a month at 10% annual interest?
marta [7]

Answer:

2970

Step-by-step explanation:

2700+ 270

270 because that is 10% of 2700

2700 because that is 75 x 36

8 0
3 years ago
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