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katen-ka-za [31]
3 years ago
10

the concentration, in parts per million, of a type of antibiotic in a human’s bloodstream after h hours can be modeled by the po

lynomial function c(h) = -0.09h2 3.5h 8. what is the concentration of the antibiotic after 3 hours?
Mathematics
1 answer:
lilavasa [31]3 years ago
8 0
17.9ppm after 3 hours
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The line of sight from a small boat to the light at the top of a 35-foot lighthouse built on a cliff 25 feet above the water mak
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75 feet that it !!!!!!!!!!!!!!
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Mr. Con makes punch by mixing 10.6 L of apple juice 0.6 L of oranges and 8 L of Ginger ale. He pours the mixture equally into 6
sattari [20]

Answer:

3.2

Step-by-step explanation:

For this we need to get the entire volume of the mixture. We get it by summing each quantities:

Vol = 10.6 + 0.6 + 8 = 19.2 L

So, we have 19.2 L for 6 bowls.

For getting the punch of each bowl we just need to divide this volume between the 6 bowls:

19.2 / 6 = 3.2 L

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3 0
3 years ago
Bill is 2 years older than his brother Will. If the product of their ages is one less than five times the sum of their ages, how
Advocard [28]

Answer:

Will's age = 9 years

Bill's age = 11years

Step-by-step explanation:

Let will age = x

Bill = x +2 since he is 2 years older

x(x+2) = 5( x +x+2) - 1

Opening brackets

x² + 2x = 5(2x + 2) - 1

x² + 2x = 10x + 10 - 1

x² + 2x = 10x + 9

Collect like terms

x² + 2x - 10x - 9 = 0

x² - 8x - 9 = 0

Solve quadratically using factorisation method by finding two factors of +9 that can add up to give -8, the coefficient of x.

The factors are -9 and +1

x² + x - 9x - 9 = 0

x(x + 1) -9( x +1)

x+1) (x -9) =0

x + 1 = 0 or x -9 =0

x = -1 or 9

Age can not be negative

Therefore,

Will's age = 9 years

Bill's age = x+2 = 9+2 = 11years

I hope this was helpful, please rate as brainliest

6 0
3 years ago
Find the value of X.
olganol [36]

Because the ratio of a 45,45,90 triangle is 1:1: square root 2, x=4.

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4 0
3 years ago
Which is the correct classification and decimal expansion of 5/8
Karo-lina-s [1.5K]
5/8 is 0.625 , so that would be the decimal for it
5 0
3 years ago
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