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Sidana [21]
4 years ago
13

Plzzz help I don't understand

Mathematics
1 answer:
Firlakuza [10]4 years ago
4 0
2/5k-3/5+1/10k
2/5k+1/10k-3/5
2/5×2= 4/10(do this to get like denominators)
4/10k+1/10k-3/5

5/10k-3/5 or 1/2k-3/5
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The volume, V, of a cone is calculated using the formula V 1 Tr?h, where r is the radius of the base and h 3 is the height of th
e-lub [12.9K]

Answer

r = 20.25

this is the awnser i know im only in 6th grade but im good at math

8 0
3 years ago
A number has 2,5 and 7 as its prime factors. what are the four smallest values it and take​
MA_775_DIABLO [31]

Answer:

  70, 140, 280, 350

Step-by-step explanation:

Obviously, it must have the factors 2, 5, 7 as a minimum, so the smallest value is 2×5×7 = 70.

Any of these primes can be added to the product. In increasing order, the smallest additional factors will be 2, 4, 5, 7, 8, 10, ...

So, the four smallest numbers with prime factors of 2, 5, and 7 are ...

  70 = 2·5·7

  140 = 2²·5·7

  280 = 2³·5·7

  350 = 2·5²·7

3 0
3 years ago
A research student is working with a culture of bacteria that doubles in size every
ser-zykov [4K]

Answer:

2^{24}*1000 bacteria

Step-by-step explanation:

The generic form of an exponential function is: f(n)=ar^n , where a is the initial amount, r is the rate, and n is the time.

In this case, the initial amount is 1000, so a = 1000. Also, the rate is 2 because the culture doubles in size every 5 minutes. However, our n is not just n; it's actually n/5 because the rate is doubling per 5 minutes, not per 1 minute. If it was per 1 minute, then the time would simply be n. Unfortunately, that's not the case here, so the exponent of r should be n/5, where n is the number of minutes that have passed.

Now, we have: f(n)=1000(2)^{n/5}

Since n is the number of minutes, we need to convert 2 hours to minutes:

2 hours * 60 min/hour = 120 minutes.

f(120)=1000(2)^{120/5}=1000(2)^{24}=2^{24}*1000f(120)=1000(2)^{120/5}=1000(2)^{24}=2^{24}*1000

Thus, the answer is 2^{24}*1000 bacteria.

Hope this helps!

5 0
3 years ago
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alukav5142 [94]
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3 years ago
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-14 < 3 + 1 < 13 answer inequality
ahrayia [7]

Answer: -14 < 1 < 3< 13

Step-by-step explanation:

This is the order from the lowest to greatest

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2 years ago
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