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gtnhenbr [62]
2 years ago
8

Need it solved correctly for khan academy

Mathematics
1 answer:
RUDIKE [14]2 years ago
6 0

The tiger population loses 3/5 of its size every 2.94 decades

<h3>Rate of change using differential calculus</h3>

The given equation is:

N(t)=710(\frac{8}{125} )^t

Find the derivative of the given function

\frac{dN}{dt} =710(0.064)^tln(0.064)\\\\\frac{dN}{dt} =-1951.7(0.064)^t

When the tiger loses 3/5 of its population

dN/dt = 3/5

Solve for t

\frac{3}{5} =-1951.7(0.064)^t\\\\-0.0003=(0.064)^t

Take the natural logarithm of both sides

ln(-0.0003)=t(ln0.064)\\\\-8.087=-2.75t\\\\t=\frac{-8.087}{-2.75} \\\\t=2.94

The tiger population loses 3/5 of its size every 2.94 decades

Learn more on rate of change using calculus here: brainly.com/question/96116

#SPJ1

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In the year 2000, a house was valued at $60 000.
Ne4ueva [31]

The percentage by which the cost is increasing will be 75%.

<h3>What is the percentage?</h3>

The quantity of anything is stated as though it were a fraction of a hundred. A fraction of 100 can be used to express the ratio.

The percentage of the 8th graders who want to go to the water slides is found from;

In the year 2000, a house was valued at $60 000.

In 2010, the same house was valued at $80 000.

The percentage value is found as;

\% = \frac{60000}{80000} \times 100 \\\\ \% =75 \%

Hence the percentage by which the cost is increasing will be 75%.

To learn more about percentages, refer to:

brainly.com/question/13450942

#SPJ1

4 0
2 years ago
Cody bought two burgers and two
8_murik_8 [283]

Answer:

$5

Step-by-step explanation:

Let the cost of one burger be $b while the cost of one small fries be s

2 burgers and 2 small fries cost $14

This means that;

2b + 2s = 14

divide both sides by 2

b + s = 7 •••••••• (i)

Three burgers and four small fries cost $23

Mathematically;

3b + 4s = 23 •••••••• (ii)

From i , we can see that s = 7- b

we can now substitute this into equation ii

3b + 4(7-b) = 23

3b + 28 -4b = 23

4b -3b = 28 -23

b = $5

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4 years ago
Maria had a beautiful baby last
iogann1982 [59]

Answer:

srry i need more points

Step-by-step explanation:

<h2>ok dont mean to bother u</h2>
7 0
3 years ago
Solve for u. 20 − (u · 0.9) = 4.7
alina1380 [7]

Answer:

20 - 0.9u = 4.7

-0.9u = 4.7 - 20

-0.9u = -15.3

Divide both sides by - 0.9

u = 17

Hope this helps.

3 0
3 years ago
Evaluate: 71 − b, if b is 27.
LUCKY_DIMON [66]
Evaluate: 71-b, if b is 27 the answer is 44
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2 years ago
Read 2 more answers
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