3 years ago

MIC UP YOU SCARED TO GET PACKED!!!!!!

Mathematics

1 answer:

FrozenT [24]3 years ago

7 0

Answer:

lol huh...

Step-by-step explanation:

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Need help with question 15

ad-work [718]

Answer:

68 degrees

Step-by-step explanation:

triangle = 180 degrees

<BFD = 180 - 90 - 22 = 68 degrees

5 0

3 years ago

A solution initially contains 200 bacteria. 1. Assuming the number y increases at a rate proportional to the number present, wri

GuDViN [60]

Answer:

1. $\frac{dy}{dt}=ky$

2.543.6

Step-by-step explanation:

We are given that

y(0)=200

Let y be the number of bacteria at any time

$\frac{dy}{dt}$ =Number of bacteria per unit time

$\frac{dy}{dt}\proportional y$

$\frac{dy}{dt}=ky$

Where k=Proportionality constant

2. $\frac{dy}{y}=kdt$ ,y'(0)=100

Integrating on both sides then, we get

$lny=kt+C$

We have y(0)=200

Substitute the values then , we get

$ln 200=k(0)+C$

$C=ln 200$

Substitute the value of C then we get

$ln y=kt+ln 200$

$ln y-ln200=kt$

$ln\frac{y}{200}=kt$

$\frac{y}{200}=e^{kt}$

$y=200e^{kt}$

Differentiate w.r.t

$y'=200ke^{kt}$

Substitute the given condition then, we get

$100=200ke^{0}=200 \;because \;e^0=1$

$k=\frac{100}{200}=\frac{1}{2}$

$y=200e^{\frac{t}{2}}$

Substitute t=2

Then, we get $y=200e^{\frac{2}{2}}=200e$

$y=200(2.718)=543.6=543.6$

e=2.718

Hence, the number of bacteria after 2 hours=543.6

4 0

4 years ago

Dottie’s art class began at 9:35 a.m. and ended at 1:42. How long was the art class? A. 3 hours, 7 minutes B. 4 hours, 7 minutes

mylen [45]

Your answer will be (B) simply use military time and subtract them and you'll get your answer best of luck.

8 0

4 years ago

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NEED HELP ASAP

stellarik [79]

because you just eliminate it

3 0

3 years ago

What is the answer to (5x3)-18

Fittoniya [83]

Answer:

-3

Step-by-step explanation:

5*3=15

15-18= -3

5 0

3 years ago

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MIC UP YOU SCARED TO GET PACKED!!!!!!​

MIC UP YOU SCARED TO GET PACKED!!!!!!