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Tasya [4]
2 years ago
6

Pls help i have been getting bad answers all day im about to fail 7th grade :( Pls I WILL GIVE BRAINLIEST ANYTHING :(

Mathematics
1 answer:
Vikentia [17]2 years ago
6 0

Answer:

1. a

2. c

3. math and the calculation of meat price per pound, then a comparison

Step-by-step explanation:

give brainliest pls pls pls

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Researchers recorded that a certain bacteria population declined from 800,000 to 500,000 in 6 hours after the administration of
kupik [55]

Answer:

We can assume that the decline in the population is an exponential decay.

An exponential decay can be written as:

P(t) = A*b^t

Where A is the initial population, b is the base and t is the variable, in this case, number of hours.

We know that: A = 800,000.

P(t) = 800,000*b^t

And we know that after 6 hours, the popuation was 500,000:

p(6h) = 500,000 = 800,000*b^6

then we have that:

b^6 = 500,000/800,000 = 5/8

b = (5/8)^(1/6) = 0.925

Then our equation is:

P(t) = 800,000*0.925^t

Now, the population after 24 hours will be:

P(24) = 800,000*0.925^24 = 123,166

5 0
2 years ago
PLEASE HELP!!!!!!!!!! What is 2^4 AND <br> 3^5
shepuryov [24]

Answer:

2^4 is 16 and 3^5 is 243

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
If the right side of the equation dy dx = f(x, y) can be expressed as a function of the ratio y/x only, then the equation is sai
melomori [17]

Answer:

 y = x*sqrt(Cx - 1)

Step-by-step explanation:

Given:

                                  dy / dx = (x^2 + 5y^2) / 2xy

Find:

Solve the given ODE by using appropriate substitution.

Solution:

- Rewrite the given ODE:

                               dy/dx = 0.5(x/y) + 2.5(y/x)

- use substitution y = x*v(x)

                               dy/dx = v + x*dv/dx

- Combine the two equations:

                                v + x*dv/dx = 0.5*(1/v) + 2.5*v

                                x*dv/dx = 0.5*(1/v) + 1.5*v

                                x*dv/dx = (v^2 + 1) / 2v

-Separate variables:

                                 (2v.dv / (v^2 + 1) = dx / x  

- Integrate both sides:

                                 Ln (v^2 + 1) = Ln(x) + C

                                 v^2 + 1 = Cx

                                 v = sqrt(Cx - 1)

- Back substitution:

                                (y/x) = sqrt(Cx - 1)

                               y = x*sqrt(Cx - 1)

                         

3 0
3 years ago
Please don’t answer just for points! Help is really needed~
Galina-37 [17]

i dont understand

what do we need to do?

4 0
2 years ago
Read 2 more answers
What is 92.3 times 4 to the power of ten
steposvetlana [31]

I am pretty sure your answer will be 96783564.8, but it may need to be rounded. If I am wrong, I am sorry.


Hope this helps~!

5 0
3 years ago
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