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1 year ago

{0.2x+0.6y=3.6 0.4x-0.9y=-1.2} what is the answer

Mathematics

1 answer:

MariettaO [177]1 year ago

4 0

Answer:

68266==874624./4

Step-by-step explanation:

77353877473=287365-2874662kkh=2875

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Answer:

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2 years ago

Caroline puts $400 into a savings account that earns 6% annually. Write a function that represents this situation, where t is th

DaniilM [7]

Answer: 19 years

Step-by-step explanation:

Given

Amount invested $\$400$

Rate of interest $R=6\%$

after 1-year amount becomes

$A=400\left (1+6\%\right)\\A=400\left (1+0.06\right)\\A=400\times 1.06\\A=\$424$

After n years it is

$A=400\left (1.06\right)^n$

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$\Rightarrow 1200=400\left(1.06\right)^n\\\Rightarrow 3=\left(1.06\right)^n\\\text{Taking log both sides}\\\Rightarrow n=\dfrac{\ln 3}{\ln 1.06}\\\\\Rightarrow n=18.85\approx 19\ \text{years}$

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3 years ago

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Step-by-step explanation:

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3 years ago

Mike buys four equally priceDVD’s online each DVD cost the same amount with a 5.98 shipping charge included the total cost came

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Answer:

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Step-by-step explanation:

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