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Alexxx [7]
2 years ago
7

5. Solve the following differential equations

Mathematics
1 answer:
natita [175]2 years ago
6 0

Answer:

Step-by-step explanation:

hello :

dy/dx = 3y sin x    means : (1/3) dy/y =sinx dx.....continu  integ

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Solve for the value of x.x^2 + 4x + 4 = 0​
Georgia [21]

Answer:

-2

Step-by-step explanation:

Lets factor

(x+2)(x+2)=0

x=-2

5 0
3 years ago
The TV weather forecaster announces that one location has a 75% chance of sleet tomorrow and a 5% chance of snow. What is the pr
alexandr1967 [171]

Answer:

80%

Step-by-step explanation:

4 0
3 years ago
The combined average weight of an okapi and a llama is 450450 kilograms. The average weight of 33 llamas is 190190 kilograms mor
Nataliya [291]

Answer:

Okapi 290 kg

Llama 160 kg


Step-by-step explanation:

Let weight of each llama be  l

Let weight of each okapi be  o


<em>Given, combined weight of 1 okapi and 1 llama is 450, we can write:</em>

<em>l+o=450</em>

<em>Also, average weight of 3 llama is 190 more than the average weight of 1 okapi, thus we can write:</em>

<em>3l-190=o</em>


Now, substituting 2nd equation into 1st equation, we can solve for weight of 1 llama:

l+o=450\\l+(3l-190)=450\\l+3l-190=450\\4l=450+190\\4l=640\\l=\frac{640}{4}=160


Each llama weights 160 kg, now using this and plugging into 2nd equation, we get weight of 1 okapi to be:

o=3l-190\\o=3(160)-190\\o=290

Each okapi weigh 290 kg

5 0
3 years ago
A placebo is a substance that should elicit no positive response in an experimental subject.
adelina 88 [10]

Answer:

  A)  True

Step-by-step explanation:

In an experiment that has the purpose of testing the efficacy of a procedure or drug, comparison is made against the efficacy of a placebo, a procedure or drug that is <em>intended to have no effect whatever</em>.

__

Famously, a placebo is often found to be nearly as effective (or even more effective) than the procedure or drug on trial. This effect is known as "the placebo effect."

7 0
3 years ago
The ratio of rainy days to non rainy days was 2 to 3. How many of the 30 days in April were rainy?
viktelen [127]
20 days were rainy.

2:3=x:30
2/3=x/30
x=20
3 0
3 years ago
Read 2 more answers
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