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2 years ago

What is the area of a circle that has circumference of 42 inches

Mathematics

1 answer:

mixer [17]2 years ago

7 0

I think the area of a circle with a circumference of forty two inches is
140.37 in^2

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Find the derivative of f(x)= e^(4x) + e^-(4x)

ololo11 [35]

Answer:

$f'(x)=4e^{4x} -4e^{-4x}$

Step-by-step explanation:

To find this derivative, we will need to use the chain rule.

As there is a variable in the exponent we can use this formula:

$f'(x)=u'e^u$

In this case, $u=4x$ and $u=-4x$

This means that $u'=4$ and $u'=-4$ respectively

This gives us $f'(x)=4e^{4x} -4e^{-4x}$

4 0

2 years ago

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What does solve w mean

cestrela7 [59]

It means to most likely isolate the variable and you should have something like w= or a number =w

6 0

2 years ago

What is the solution of the equation 4.5+m=10

drek231 [11]

Answer:

The first thing that we need to do is subtract 4.5 from both sides because that would removed the 4.5 from the left side and leave us with m by itself. So we get the following $m=5.5$ and that is our solution.

Hope this helps! Let me know if you have any questions

6 0

1 year ago

Read 2 more answers

Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

diamong [38]

ANSWER

$x = - 2 \pm i$

EXPLANATION

We use the method of completing the squares.

The equation is
$3 {x}^{2} = - 12x - 15$

We rewrite the above equation to obtain;

$3 {x}^{2} + 12x = - 15$

We divide through by 3 to obtain;

${x}^{2} + 4x = - 5$

We add half the coefficient of
$x$

to both sides of the equation to get,

${x}^{2} + 4x + {2}^{2} = - 5 + {2}^{2}$

The right hand side is now a perfect square.

${(x + 2)}^{2} = - 1$

We now take square root of both sides to get;

$x + 2 = \pm \sqrt{ - 1}$

We add -2 to both sides,

$x = - 2 \pm \sqrt{ - 1}$

We simplify to obtain,

$x = - 2 \pm i$

3 0

3 years ago

If the diagonals of a parallelogram are perpendicular bisector of each other then it is a ____

Rina8888 [55]

Answer:

Rhombus

Step-by-step explanation:

I think so, probably.

4 0

3 years ago