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mr Goodwill [35]
2 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]2 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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The Slow Fix auto shop charges $28 for parts and $48 per hour of labor. The We Work Cheaper auto shop charges $59 for parts and
Sidana [21]

Answer: 10 hours

Step-by-step explanation:

Given

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When these costs are the same

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6 0
3 years ago
Linear equations 3(x+1)=3x+3
vaieri [72.5K]
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3 0
3 years ago
What does y=x+2, y=2, x=4 mean
PIT_PIT [208]

Step-by-step explanation:

Putting values of x and y

2 = 4 + 2

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4 0
3 years ago
Read 2 more answers
Chapter 8 Written Homework 1. A hypothesis test is conducted to test the claim that the proportion of people with dark hair at M
UNO [17]

Answer:

we reject  H₀

Step-by-step explanation:  Se annex

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z(c) = 1,64

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Hₐ       Alternate hypothesis   μ   >  μ₀

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The annex shows z(c), z(s), rejection and acceptance regions, and as we can see z(s) > z(c) and it is in the rejection region

So base on our drawing we will reject  H₀

3 0
2 years ago
A container holds 8 gallons of water. If 4/5 of a gallon is added to the container each hour, how many hours would it take to fi
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1 hour = 4/5 gallon
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= 8/1 × 5/4
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the answer is A
3 0
3 years ago
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