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3 years ago

Find the area of equilateral triangle of side 4 cm.

Mathematics

2 answers:

Debora [2.8K]3 years ago

6 0

<h2>Answer:</h2>

<u>The area would be </u><u>7 cm</u>

<h2>Step-by-step explanation:</h2>

See the image

ipn [44]3 years ago

4 0

Answer:6.928

Step-by-step explanation: formula A=√ 3*(side^2/4)

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The fish population of Lake Collins is decreasing at a rate of 5% per year. In 2004 there were about 1,350 fish. Write an expone

ad-work [718]

Answer:

Part 1) The exponential function is equal to $y=1,350(0.95)^{x}$

Part 2) The population in 2010 was $992\ fish$

Step-by-step explanation:

Part 1) Write an exponential decay function that models this situation

we know that

In this problem we have a exponential function of the form

$y=a(b)^{x}$

where

y ----> the fish population of Lake Collins since 2004

x ----> the time in years

a is the initial value

b is the base

we have

$a=1,350\ fish$

$b=(100\%-5\%)=95\%=0.95$

substitute

$y=1,350(0.95)^{x}$ ----> exponential function that represent this scenario

Part 2) Find the population in 2010

we have

$y=1,350(0.95)^{x}$

For $x=(2010-2004)=6\ years$

substitute

$y=1,350(0.95)^{6}=992\ fish$

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Read 2 more answers

help please! I must solve using descartes law of signs or rational root theorem. show all steps please thanks!

wel

Answer:

x=2 or x=3

Step-by-step explanation:

x^4 - 5x^3 + 7x^2 - 5x + 6 = 0

Step 1=Factor left side of equation.

(x-2) (x-3) (x^2 + 1) = 0

Step 2=Set factors equal to 0.

x-2 = 0 or x-3 = 0 or x^2 + 1 = 0.

Answer:x=2 or x=3

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3 years ago

Find the area of equilateral triangle of side 4 cm.​

Find the area of equilateral triangle of side 4 cm.