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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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HELP IF U WANNA BE MARKED BRAINLIEST
Sedaia [141]

Answer:

b. between 2.8 and 2.9

Step-by-step explanation:

Simplify the square root of radical 8; radical 8 = 2 radical 2

Simplify the radical in decimal form, to the nearest tenth; 2.8

7 0
3 years ago
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How Do Solve 3/4=3/8x-3/2 And Show All Your Work
lubasha [3.4K]
It's too hard for me to show all the work, but you can find a common denominator in 8.

Change 3/4 to 6/8 and -3/2 to -12/8.

Now that all the fractions have the same denominator, you can multiply the whole problem by 8 and cancel out all denominators.

You are left with 6=3x-12

Add 12 to 6 and cancel out on the right side.

18=3x

Divide by 18 by 3

x=6
3 0
3 years ago
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A(y+c) =b(y-c) solve for y
SashulF [63]
(( AY + AC ) / B ) + C = y
7 0
3 years ago
Which of the following inequalities matches the graph? (1 point)
Aleksandr [31]

Answer: 2x + y < 7

Step-by-step explanation:

In the graph we can see that:

The line is a dashed line, and the shaded area is below the dashed line, then we will have something like:

y < a*x + b

We also can see that the slope of the line is negative, and that the y-intercept is +7

Then the inequality will be something like:

y < a*x + 7

Now we can see that the line passes through the points (0, 7) and (3, 1)

Then the slope will be:

a = (1 - 7)/(3 - 0) = -6/3 = -2

that is negative, as we already said.

Then we have:

y < -2*x + 7

we can rewrite this as:

2x + y < 7

This is the first solution shown.

7 0
2 years ago
What is the slope of a line that is parallel to the line represented by the equation 3x+4y=12?
mash [69]

Slope-intercept form is:

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0)

(there is probably another way to do this, but I will be doing it this way)


Isolate the "y" in the equation

3x + 4y = 12       Subtract 3x on both sides

4y = 12 - 3x        Divide 4 on both sides

y=3-\frac{3}{4}x  or   y=-\frac{3}{4} x+3   The slope is -3/4


For lines to be parallel, they have to have the SAME slope. The given line's slope is -3/4, so the slope of the parallel line is also -\frac{3}{4}

8 0
3 years ago
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