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Sindrei [870]
2 years ago
13

HELPPPPPPP PLSSS answer the question​

Mathematics
1 answer:
Yuliya22 [10]2 years ago
5 0

Answer:

i need help with something like that aswell

Step-by-step explanation:

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On a driving test, Roxane answered 70% of the 20 questions correctly. How many questions did
Nikitich [7]
She got 14 questions right
4 0
3 years ago
Read 2 more answers
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
У + 2х = 7<br> у = 3х – 3<br> What is the answer to this
Neko [114]
I think the correct answer is ( 2, 3 )
6 0
3 years ago
Mike is reading a map with a scale of 1 in. = 35 mi. On the map, the
Umnica [9.8K]

Answer:

Actual distance represented by 5.5 inch of map distance is

192.5 miles

Step-by-step explanation:

Given,

The scale of map -

1 inch on map is equal to 35 miles.

Distance measured by mike on map is equal to 5.5 inch

Actual distance represented by 5.5 inch of map distance is

= 5.5 * 35 = 192.5 miles

8 0
3 years ago
Problems for you to try.
Alecsey [184]

Step-by-step explanation:

8⁴.... I hope it's correct

HAVE A GOOD DAY!

5 0
3 years ago
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