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2 years ago

Simplify (7ty)(3t) (answer fast please)

Mathematics

1 answer:

attashe74 [19]2 years ago

4 0

21t^2y is the answer!

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In the given figure, find the value of a and b.

Sladkaya [172]

Answer is 180- (60+70) = 50°

6 0

2 years ago

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Can someone help me

ryzh [129]

Answer:

Answer a: mST=20

Answer b: mST=48

Step-by-step explanation:

Problem a:

3a-5=2a+50

a=55

2(55)+50=160

180-160=20

Problem b:

180=4c-12

192=4c

48=c

7 0

3 years ago

The population of a certain community is known to increase at a rate proportional to the number of people present at time t. If

attashe74 [19]

Answer:

$t=7.85 years$

Step-by-step explanation:

We can write this rate as an ordinary differential equation.

$\frac{dP}{dt}=aP$

Where a is proportional constant, P the population variable, and t the time.

$\frac{dP}{P}=adt$

Integrating each side of the equation.

$\int \frac{dP}{P}=\int adt$

$ln(P)=at+c$

$P=e^{at+c}$

$P=e^{c}e^{at}=Ce^{at}$

To find C we need to use the initial condiction, it means evaluae P at t=0.

$P_{0}=Ce^{0}=C$

$P=P_{0}e^{at}$

Now, we use the sentence the population has doubled in 5 years.

$2P_{0}=P_{0}e^{a5}$

We can find "a" in this condition.

$2=e^{a5}$

$ln(2)=a5$

$a=\frac{ln(2)}{5}$

$a=0.14$

Finally, let's find how long will it take to triple.

$3P_{0}=P_{0}e^{0.14t}$

$3=e^{0.14t}$

$t=\frac{ln(3)}{0.14}$

$t=7.85 years$

I hope it helps you!

4 0

2 years ago

Question 11 please <br> 10 points <br> So yeah

MakcuM [25]

Answer:

The answer would be 2012 and 2004

Step-by-step explanation:

when you round 30.346 to the nearest tenth it is 30.4 and when you round 30.406 to the nearest tenth then it is also 30.4.

Hope it helps!

6 0

3 years ago

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While waiting for a video game to download, you notice that 30% of 32,000 kilobytes have been downloaded so far.

kirill [66]

9600 kilobytes...
30 x 32000 divided by 100 = 9600
hope this helps!

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3 years ago

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