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3 years ago

Graph > -4. > -5 -4 -3 -2 -1 0 1 2 3

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

8 0

Answer:

cant under stand thoes

Step-by-step explanation:

sorry

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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.

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4 years ago

Combine and simplify the following radical expression.

guajiro [1.7K]

Answer:

Step-by-step explanation:

$2 \sqrt{20} + 8 \sqrt{45} - \sqrt{80}$

$= 2 \sqrt{2 \times 2 \times 5} + 8 \sqrt{3 \times 3 \times 5} - \sqrt{2 \times 2 \times 2 \times 2 \times 5}$

$= 2(2 \sqrt{5} ) + 8(3 \sqrt{5} ) - (4 \sqrt{5} )$

$= 4 \sqrt{5} + 24 \sqrt{5} - 4 \sqrt{5}$

$= 24 \sqrt{5} (ans)$

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3 years ago

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The sum of 7 and three times a<br> number is at least 13.

inessss [21]

Answer:

1.5 or 3/2

Step-by-step explanation:

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3 years ago

Give domain from least to greatest points.- (2,1) (3,4) (5,6) (7,5) (9,3)

andre [41]

Answer:

potanginaaaa you ahahahaha plss

Step-by-step explanation:

pa brainliest po baby bago Po Ako dito

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3 years ago

What is the value of 5p5<br><br> A. 5<br><br> B. 25<br><br> C. 120<br><br> D. 125

krek1111 [17]

i just did the test and the answer was 120 trust me

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3 years ago