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Mumz [18]
3 years ago
13

What percent is 50 of 40?

Mathematics
1 answer:
gayaneshka [121]3 years ago
6 0
50% of 40 is 20.
40/2 =50.
Just divide the number by 2 anytime it asks for 50%.
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It takes 343 inches³ of water to fill an empty cube. If the sides of the cube were tripled, how much water would be needed to fi
pochemuha
I believe it would be 9,261 inches of water to fill the new cube.


To find the maximum capacity of a cube you have to multiply s*s*s (each s stands for one of its sides)

The side length happens to be 7. 7 times 7 times 7 is 343. If we triple that length now it’ll be 21. Multiply 21 by 21 by 21 it’ll give you 9,261 inches
8 0
3 years ago
Please help,
Step2247 [10]
13/50 = 0.26
0.26 is very close to 0.25 which is 1/4.

Answer: A. 1/4

7 0
3 years ago
The population of a suburb grows at a rate proportional to the population. Suppose the population doubles in size from 3000 to 6
frozen [14]

Answer:

P(t) = 3000e^{0.1155t}

Step-by-step explanation:

The growth of the population can be modeled by the following differential equation:

\frac{dP}{dt} = rP

Where r is the growth rate, P is the population, and t is the time measures in months.

I am going to solve the above differential equation with the separation of variables method.

\frac{dP}{P} = rdt

Integrating both sides:

ln P = rt + P(0)

Where P(0) is the initial condition

We need to isolate P in this equation, so we do this

e^{ln P} = e^{rt + P(0)}

So

P(t) = P(0)e^{rt}

The problem states that P(0)=3000, so:

P(t) = 3000e^{rt}

The problem wants us to find the value of r:

It states that the population doubles in size from 3000 to 6000 in a 6- month period, meaning that P(6) = 6000. So

6000 = 3000e^{6r}

e^{6r} = 2

To isolate 6r, we apply ln to both sides.

ln (e^{6r}) = ln 2

6r = 0.693

r = \frac{0.693}{6}

r = 0.1155

The particular solution to the differential equation with the initial condition P(0)=3000 is:

P(t) = 3000e^{0.1155t}

5 0
3 years ago
Select the correct answer from the drop-down menu.
Archy [21]
-2,-2 I think that’s the answer
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3 years ago
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Im not sure what the answer is but dont open the link its a virus
6 0
3 years ago
Read 2 more answers
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