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velikii [3]
3 years ago
10

4×

rmula"> times what number is equal 16×10^{5}?
Mathematics
1 answer:
Anettt [7]3 years ago
5 0
4000 (4x10^3) times 400 (4x10^2) is equal to 16x10^5 ( 1,600,000)
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Solve for x<br> (2x - 3)(x - 2) = 0
Zinaida [17]

Answer:

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Step-by-step explanation:

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2 years ago
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5#The distribution of scores on a standardized aptitude test is approximately normal with a mean of 480 and a standard deviation
kirza4 [7]

We want to find the value that makes

P(X\ge x)=0.2

To find it we must look at the standard normal table, using the complementary cumulative table we find that

P(Z\ge z)=0.20045\Leftrightarrow z=0.84

Then, using the z-score we can find the minimum score needed, remember that

z=\frac{x-\mu}{\sigma}

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σ = standard deviation

μ = mean

And in our example, x = minimum score needed, therefore

\begin{gathered} 0.84=\frac{x-480}{105} \\  \\ x=0.84\cdot105+480 \\  \\ x=568.2 \end{gathered}

Rounding to the nearest integer the minimum score needed is 568, if you get 568 you are at the top 20.1%.

7 0
1 year ago
The rate of change of the volume of a snowball that is melting is proportional to the surface area of the snowball. Suppose the
Alisiya [41]

Answer:

According to the passage, we have the next equation:

\frac{dV}{dt} = \frac{4}{3}\pi*3*r^{2}*\frac{dr}{dt} = K*(4\pi*r^{2} )

where "K" is a proportional constant

Leaving at the end with the next equation:

\frac{dr}{dt} = K

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r=K*t+C

where "C" is a constant

Then, we have the 2 conditions for the problem:

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Replacing in the equation, we have C = 10

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Finally, the time which the snowball will be completely melted will be when r = 0. So replacing in the equation

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6 0
2 years ago
The function g(n)=n²-6n+16 represents a parabola.
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Hope this helps!

4 0
3 years ago
There is a bag with only red marbles and blue marbles.
Leviafan [203]

Answer:

do 7/9*42. then you will get answer

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2 years ago
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