All categories

2 years ago

Can someone solve this for me?

Mathematics

1 answer:

DaniilM [7]2 years ago

4 0

Answer
Is 8

Explanation

You might be interested in

The number of bacteria in a refrigerated food product is given by N ( T ) = 22 T 2 − 123 T + 40 , 6 < T < 36 , where T is

antoniya [11.8K]

Answer:

$N(T(t)) = 1408t^2 - 385.6t - 105.52$

Time for bacteria count reaching 8019: t = 2.543 hours

Step-by-step explanation:

To find the composite function N(T(t)), we just need to use the value of T(t) for each T in the function N(T). So we have that:

$N(T(t)) = 22 * (8t + 1.7)^2 - 123 * (8t + 1.7) + 40$

$N(T(t)) = 22 * (64t^2 + 27.2t + 2.89) - 984t - 209.1 + 40$

$N(T(t)) = 1408t^2 + 598.4t + 63.58 - 984t - 169.1$

$N(T(t)) = 1408t^2 - 385.6t - 105.52$

Now, to find the time when the bacteria count reaches 8019, we just need to use N(T(t)) = 8019 and then find the value of t:

$8019 = 1408t^2 - 385.6t - 105.52$

$1408t^2 - 385.6t - 8124.52 = 0$

Solving this quadratic equation, we have that t = 2.543 hours, so that is the time needed to the bacteria count reaching 8019.

4 0

3 years ago

Which number is NOT an integer?

FinnZ [79.3K]

I believe the answer is C

8 0

3 years ago

Read 2 more answers

What is the volume of the pyramid?

k0ka [10]

Answer:

The volume of the rectangular pyramid is 80cm³

Step-by-step explanation:

To calculate the volume of a rectangular pyramid we have to use the following formula:

v = volume

w = width = 8 cm

l = length = 6 cm

h = height = 5 cm

v = (w * l * h) / 3

we replace the values that we know

v = (8cm * 6cm * 5 cm) / 3

v = 80cm³

The volume of the rectangular pyramid is 80cm³

4 0

3 years ago

Read 2 more answers

Based on the graph below, how would you describe the curve?

motikmotik

Answer:

It's A.

Step-by-step explanation:

For every value of x there is one value of y - we can draw a vertical line through any value of x and it will pass through only one value of y.

Therefore it is a one-to-one function.

8 0

3 years ago

Read 2 more answers

What is the height of 840mm³.

Rus_ich [418]

Answer:

What?

Step-by-step explanation:

Possible answers could be

the factors of 840

IF the 840 is your area.

Factors of 840 which are your answers:

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420.

7 0

2 years ago