PLEASE HELP!!!!!!! GEOMETRY

Mathematics

1 answer:

ASHA 777 [7]3 years ago

3 0

The answer is -3/7........................................

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What is 2,871,000,000 in scientific notation

Nimfa-mama [501]

Answer:

2.871*10^9

Step-by-step explanation:

add a decimal point at the end of the number ( 2,871,000,000.) then count how many places it takes to move the decimal point between the first and second number (2.8) then write the rest of the numbers higher than "0" after, giving you the 2.871

to show that the number written is in scientific notation you add 10 to the power of the amount of times you moved the decimal place. In this case, because the decimal point was moved a total of 9 times, it would be 10 to the 9th power (10^9).

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Step-by-step explanation: 2^2z

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When and how do you use logarithms to solve exponential equations? give an example of an exponential equation that does not requ

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$\bf 5^{x+3}=\cfrac{1}{125}\implies 5^{x+3}=\cfrac{1}{5^3}\implies 5^{x+3}=5^{-3}
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\textit{because the bases are the same, the exponents must also be the same}
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x+3=-3\implies \boxed{x=-6}\\\\
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3^x=4^{2x}\implies log(3^x)=log(4^{2x})\implies xlog(3)=(2x)log(4)
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\cfrac{x}{2x}=\cfrac{log(4)}{log(3)}\implies \cfrac{1}{x}=\cfrac{log(4)}{log(3)}\implies \cfrac{log(3)}{log(4)}=x\implies \boxed{0.79248125\approx x}$

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