The number of bacteria in a culture can be modeled by the function N(t) = 28ť - 30t + 160, where t is the temperature, in degrees Celsius, the
culture is being kept. A scientist wants to have fewer than 200 bacteria in a
culture in order to test a medicine effectively. What is the approximate domain of
temperatures that will keep the number of bacteria under 200?
А
"1.01°C B
-0.90°C < t < 1.97°C
*0.86°C < t < 1.93°C
D
"0.77°C < t < 1.85°C

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

45

step-by-step explanation:

the k side

step-by-step explanation:

plese mark mde brainliest!

answer: none of these answers are correct only the second half is

step-by-step explanation: