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mr Goodwill [35]
3 years ago
14

Help!! I spent hours trying to figure this out!! Answer was incorrect. And it has to be written in equation or fraction format.

No decimals.
Here’s my work:
Using a substitution
u = 4 * x^(-2)
du = -8 * x^(-3) * dx
(-1/8) * du = x^(-3) * dx
Now I have:
e^(4x^(-2)) * dx / x^3 =>
e^(u) * (-1/8) * du
Integrate
(-1/8) * e^(u) + C =>
(-1/8) * e^(4x^(-2)) + C
From 4 to 6
(-1/8) * e^(4 * 6^(-2)) + (1/8) * e^(4 * 4^(-2)) =>
(1/8) * (e^(4/16) - e^(4/36)) =>
(1/8) * (e^(1/4) - e^(1/9))

Mathematics
1 answer:
zysi [14]3 years ago
8 0

Answer:

its correct my friend gg i ttok half an hour to do it

Step-by-step explanation:

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Naddika [18.5K]

Answer:

D. f(x) = x - 4

Step-by-step explanation:

If you plug in the x values for the expression x - 4:

3 - 4 = -1
4 - 4 = 0
5 - 4 = 1
6 - 4 = 2
This means that the function rule is f(x) = x - 4
Hope this helps :)

8 0
2 years ago
Read 2 more answers
Describe when to use a series and when to use an equation.
anyanavicka [17]

Answer:

An equation is used when we have paired sets of data to describe how the values in one pair change when we alter the values in the other set.

On the other hand, a series gives a general formula of determining the value of the nth observation when the values have been arranged in increasing order

Step-by-step explanation:

An equation such as; y = 3x+5 models the relation between the response variable y and the predictor variable x. It tells us how y changes when x is altered by a certain magnitude. The value 3 is described as the slope while 5 is the y-intercept.

On the other hand, a series such as;  score = 2 + 3n provides a general formula that can be used to determine the score of the nth individual in a sample or population.

5 0
3 years ago
In each diagram, line p is parallel to line f, and line t intersects lines p and f. Based on the diagram, what is the value of x
ololo11 [35]
X would be 84 degrees, since its corresponding angle would be worth 84.
Hope this helped!
4 0
3 years ago
A boy purchased​ (bought) a​ party-length sandwich 51 in. long. He wants to cut it into three pieces so that the middle piece is
shepuryov [24]

Answer:

Step-by-step explanation:

we have a 51 in sandwich

let a piece be x

we have x= shorter piece

another piece is x+6

another piece (x+6)-9=x-3

x+x+6+x-3=51

3x=51-3

3x=48

x=48/3=16

x=16, longer piece is 16+6=22, shorter piece =10

6 0
2 years ago
Jaylen earns $4250 each month at his job. At this rate, how much will he
dezoksy [38]

Answer:

<u>C. 76,500</u>

Step-by-step explanation:

<h2>18 months in 1 \frac{1}{2} years.</h2><h2>4250 x 18 = 76,500</h2>
4 0
2 years ago
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