3 years ago

WILL MARK BRAINLIEST TO THE BEST ANSWER!!

Mathematics

2 answers:

ruslelena [56]3 years ago

8 0

$\dfrac{12^3}{12^7} = 12^{3 - 7} = 12^{-4} = \dfrac{1}{12^4}$

Answer: B

Mila [183]3 years ago

4 0

Answer:

B 1/12^4

Step-by-step explanation:

12^3 / 12^7

= 12^ (3-7)

= 12^ (-4)

= 1/ 12^4

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ANTONII [103]

Take the difference 3%

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3 years ago

There are 20 boys and 18 girls in a class find the percentage of {1} boys {2} girls, in the class

Viktor [21]

Answer:

1. 52.63% 2. 47.36%

Step-by-step explanation:

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What is the sum of 8.4*10^8 and 4.2*10^7 written in scientific notation?

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5 0

3 years ago

If y varies inversely with x and y = 8... the question is in the picture

pshichka [43]

Answer:

I believe the answer is 4.

Step-by-step explanation:

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8 0

3 years ago

Which of the following is the solution to the differential equation dP/dt+P=10 with the initial condition P(0)=4

Ber [7]

Answer:

Option C. $P=10-6e^{-t}$

Explanation:

1. Separate variables:

$\dfrac{dP}{dt}+P=10\\ \\ \\ \\\dfrac{dP}{dt}=-P+10\\ \\ \\ \dfrac{dP}{-P+10}=dt$

2. Find the indefinite integrals

$-\ln{(10-P)}=t+C$

3. Solve for P

$10-P=e^{-t+C}\\ \\ 10-P=Ke^{-t}\\ \\ P=10-Ke^{-t}$

4. Use the initial condition, P(0) = 4, to find K:

4 = 10 - K(e⁰)

4 = 10 - K

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5. Substitute K = 6 into the integrated equation:

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4 0

3 years ago