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Andreas93 [3]
2 years ago
9

What is the value of this expression when a=20

Mathematics
1 answer:
Aloiza [94]2 years ago
4 0

Answer:

20

Step-by-step explanation:

A=20

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What is the true solution to the equation below? In e^in x + in e^in x^2 = 2 in 8
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To solve the given equation, w need to review some rules:
(1) \ ln \ e = 1 \\ 
(2) \ ln \  b^{a} = a*ln \ b \\
(3) \ ln \ a + ln \ b = ln \ (ab) \\
(4) \ ln \ a - ln \ b = ln \  \frac{a}{b}  \\

The given equation is :
ln \  e^{ln \ x} + ln \  e^{ln \  x^{2}} = 2 \ ln \ 8
ln \ x * ln \ e + ln \  x^{2} * ln \ e = 2 \ ln \ 8  ⇒⇒⇒⇒ rule (2)
ln \ x + ln \  x^{2} = ln \  8^{2}  ⇒⇒⇒⇒ rule (1) and rule (2)

ln \ ( x*  x^{2} ) = ln \ 64          ⇒⇒⇒⇒ rule (3)
removing the nature logarithm from both sides

x^{3} = 64 =  4^{3}
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So, the correct answer is option (2) ⇒⇒⇒⇒ x = 4


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3 years ago
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How many of the numbers from the set $\{1,\ 2,\ 3,\ldots,\ 50\}$ have a perfect square factor other than one?
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Answer:

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3^2(1,2,3, 5)   =  9, 18, 27, 45

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Step-by-step explanation:

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What are the activities?
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D. The player skates 12 m forward and then skates 12 m in the opposite direction.​

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The player skates 12 m forward then back 12 m which means he is back to his starting point. :)

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