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NNADVOKAT [17]
3 years ago
7

I need help with all these problems and need to know is the ones I did correct

Mathematics
1 answer:
never [62]3 years ago
7 0
The answers are 5:30 6:20 8:120
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Given the differential Equation y'+2y=2e^x ;solve this equation using the integration factor; solve for y to get the general sol
SCORPION-xisa [38]

y'+2y=2e^x\Longrightarrow y'=2e^x-2y

If f'(x)=g(x) then y=\int{g(x)dx}

So we extract,

y=\int{2e^x-2x}dx

Which becomes,

y=2e^x-x^2+C

Hope this helps.

r3t40

5 0
3 years ago
For a normal distribution with mean of 62 and a standard deviation of 6, find the number of standard deviations the raw score 47
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Numbers of dinners =125         individual portion= 6oz         size of can = 32oz    
4 0
2 years ago
A number that represents part of a whole or part of a set is called
svetlana [45]
A fraction. I.E. : 6 has 36 parts (6 parts per one) If you took 2 out of the six parts away you would get 32/6 or 5 2/6 (2/6 could be simplified to 1/3)
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3 years ago
The table below shows the surface area y, in square feet, of a shrinking lake in x days:
andreyandreev [35.5K]
Based on the data, the most likely correlation coefficient would be -1.
The slope between 20 and 30 days is -1, and it represents the change in the surface area of the lake per day.
The data represents correlation, not causation.

Since the data would form a perfectly straight line through the points, the correlation coefficient would be -1 for a perfect decreasing fit.
To find the slope, find the change in the surface area between those days, the change in the days, and write it as surface area/days:  80-90=-10; 30-20=10; -10/10=-1
This is not causation because there could be lurking variables we cannot see.
6 0
3 years ago
Write 8 x 8 x 8 x 8 using an exponent.
vredina [299]

Answer: 8^4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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