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3 years ago

What is the approximate solution to this equation? 19 + 2lnx=25

Mathematics

2 answers:

daser333 [38]3 years ago

4 0

First of all, let us start by doing simple changes:

19+2lnx=252lnx=25−92nx=6----------------------->>>>> we applied simple side by side manipulations, now we will do the division by 2 in both the sides, it will end up this:

lnx=3--------------->>>>>> now we will use the inverse of ln, which is eelnx=e3x=e3 ----->>> now you should use a calculator or the problem may have this as solution depending on the assignment guidelines.

Maurinko [17]3 years ago

3 0

Answer:

20.086

Step-by-step explanation:

Solve for x by isolating it. First subtract 25 by 19. Next, divide by 2. Finally, multiply by by base e. Use a calculator to estimate.

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If the complex number x = 3 + bi and |x|^2 = 13, which is a possible value of b?

olga55 [171]

If x=3+bi, then

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You know that $|x|^2=13,$ then

$\left(\sqrt{3^2+b^2}\right)^2=13,\\ \\ 9+b^2=13,\\ \\b^2=4,\\ \\b=\pm 2.$

Two possible complex numbers satisfy these conditions:

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3 years ago

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Delvig [45]

In the given question, it is given that

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3 years ago

Simplify 8 - 9n - n-4 A. 5n B. 9 – 21 C. 4 - 1072 D. 9-12

andre [41]

Answer:

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Step-by-step explanation:

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3 years ago

If f(x) = - 2x2 + 2x - 3, what is f(5)? A) -93 B) -43 C) -28 D) - 43/5

andrew-mc [135]

Answer:

The answer to your question is letter B

Step-by-step explanation:

Process

1.- Write the function

f(x) = - 2x² + 2x - 3

Find f(5)

2.- Substitute x for 5

f(5) = -2(5)⁵ + 2(5) - 3

3.- Simplify

f(5) = -2(25) + 10 - 3

f(5) = -50 + 7

f(5) = -43

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Flura [38]

Whats the question you need the answer to?

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4 years ago

Read 2 more answers