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chubhunter [2.5K]
3 years ago
9

Help i will mark brainly

Mathematics
2 answers:
jok3333 [9.3K]3 years ago
7 0

Answer:

2/5

Step-by-step explanation:

aleksandr82 [10.1K]3 years ago
3 0

Answer:

hey i see that you are on nitro type what is your name

the answer is 2/6

Step-by-step explanation:

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You are having a discussion about sequences with your classmate. She insists the the sequence 2,3,5,8,12 must be either arithmat
IgorC [24]
The sequence is, in fact, quadratic. It is described by the equation
.. a[n] = (n*(n -1))/2 +2

First differences are increasing, so the sequence will not be arithmetic. An arithmetic sequence has constant first differences.

Second differences are constant, so the sequence will not be geometric. A geometric sequence will have first-, second-, third-differences, and those to any level, that have the same constant ratio as the terms of the original sequence.
4 0
3 years ago
A hot air balloon holds 3,249 cubic meters of helium. The density of helium is 0.1785 kilograms per cubic meter. How many kilogr
professor190 [17]
We find the answer by using the density formula: d  =m/v
We know the density: 0.1785
We know the volume: 3,249
We DO NOT know the mass, so that is what we're trying to finding
0.1785 = m/3,249
Solve:
3,249 * 0.1785 = m/3,249 * 3,249
579.9465 which can be rounded to 579.9
The answer is D. 
5 0
3 years ago
Read 2 more answers
Find unit rate round to nearest hundredth if necessary.
S_A_V [24]

Answer:

Step-by-step explanation:

0.57 . im guessing

3 0
3 years ago
How to solve 1/7k - 6 = 3/7k + 4
FinnZ [79.3K]
I hope this helps you

8 0
3 years ago
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The percent of concentration of a certain drug in the bloodstream x hours after the drug is administered is given by K(x) 5x/x^2
Olegator [25]

Given :

The percent of concentration of a certain drug in the bloodstream x hours after the drug is administered is given by K(x) = \dfrac{5x}{x^2+9}.

To Find :

Find the time at which the concentration is a maximum. b. Find the maximum concentration.

Solution :

For maximum value of x, K'(x) = 0.

K'(x) = \dfrac{5(x^2+9)- 5x(2x)}{(x^2+9)^2}=0\\\\5x^2+45-10x^2=0\\\\5x^2 = 45\\\\x = \pm 3

Since, time cannot be negative, so ignoring x = -3 .

Putting value of x = 3, we get, K(3) = 15/( 9 + 9) = 5/6

Therefore, maximum value drug in bloodstream is 5/6 at time x = 3 units.

Hence, this is the required solution.

5 0
2 years ago
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