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3 years ago

40% of 65 HELP PLS thanks

Mathematics

2 answers:

katrin [286]3 years ago

6 0

26 is the answer to 40% of 65

dybincka [34]3 years ago

3 0

Hey it’s 26 hope this helps

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Which inequality is shown?

Nimfa-mama [501]

Answer:

It should be J

Step-by-step explanation:

The line is solid indicating it is a greater than/less than/equal relationship and the shaded area indicated a positive y (so greater than)

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3 years ago

Evaluate the indefinite integral. integar x4/1 + x^10 dx

ivann1987 [24]

Answer:

$\int\ {\frac{x^4}{1 + x^{10}}} \, dx = \frac{1}{5}( \arctan(x^5)) + c$

Step-by-step explanation:

Given

$\int\ {\frac{x^4}{1 + x^{10}}} \, dx$

Required

Integrate

We have:

$\int\ {\frac{x^4}{1 + x^{10}}} \, dx$

Let

$u = x^5$

Differentiate

$\frac{du}{dx} = 5x^4$

Make dx the subject

$dx = \frac{du}{5x^4}$

So, we have:

$\int\ {\frac{x^4}{1 + x^{10}}} \, dx$

$\int\ {\frac{x^4}{1 + x^{10}}} \, \frac{du}{5x^4}$

$\frac{1}{5} \int\ {\frac{1}{1 + x^{10}}} \, du$

Express x^(10) as x^(5*2)

$\frac{1}{5} \int\ {\frac{1}{1 + x^{5*2}}} \, du$

Rewrite as:

$\frac{1}{5} \int\ {\frac{1}{1 + x^{5)^2}}} \, du$

Recall that: $u = x^5$

$\frac{1}{5} \int\ {\frac{1}{1 + u^2}}} \, du$

Integrate

$\frac{1}{5} * \arctan(u) + c$

Substitute: $u = x^5$

$\frac{1}{5} * \arctan(x^5) + c$

Hence:

$\int\ {\frac{x^4}{1 + x^{10}}} \, dx = \frac{1}{5}( \arctan(x^5)) + c$

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3 years ago

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suter [353]

Answer:

x ≈ 1.28

Step-by-step explanation:

I just took the exam:

Area of rectangle =(3x-1)(x+6), Area of circle = PI(x+1)^2. If you graph these and find where they intersect, you will get x ≈ 1.28.

I hope this helped! :)

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3 years ago

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sattari [20]

Answer:

Step-by-step explanation:

1) Find the common denominator.

2) Multiply everything by the common denominator.

3) Simplify.

4) Check the answer(s) to make sure there isn't an extraneous solution.

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3 years ago

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yanalaym [24]

Answer:

I think your answer is correct

Step-by-step explanation:

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3 years ago