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swat32
3 years ago
8

the population of the united states is expected to be 392 million people by 2050. write this numbers in scientific notation

Mathematics
1 answer:
Andrews [41]3 years ago
4 0
3.92 * 10^8: the answer to the question
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A spherical balloon is being inflated at a rate of 3 cubic inches per second. Determine the change in the rate of the radius.How
Novay_Z [31]

Answer:

The rate rate of change of radius is \frac{1}{48\pi} inches per second when the diameter is 12 inches.

The radius is changing more rapidly when the diameter is 12 inches.

Step-by-step explanation:

Consider the provided information.

A spherical balloon is being inflated at a rate of 3 cubic inches per second.

The volume of sphere is V=\frac{4}{3}\pi r^3

Differentiate the above formula with respect to time.

\frac{dV}{dt}=4\pi r^2\frac{dr}{dt}

Substitute the respective values in the above formula,

3=4\pi 6^2\frac{dr}{dt}

\frac{1}{48\pi}=\frac{dr}{dt}

The rate rate of change of radius is \frac{1}{48\pi} inches per second when the diameter is 12 inches.

When d=16

3=4\pi 8^2\frac{dr}{dt}

\frac{3}{256\pi}=\frac{dr}{dt}

Thus, the radius is changing more rapidly when the diameter is 12 inches.

5 0
3 years ago
Can someone please help, I'll give brainliest!!! WORTH 40 PTS!
Studentka2010 [4]

Answer:

X = 14.48528137

Step-by-step explanation:

  1. ADD 72 TO BOTH SIDES
  2. SQUARE ROOT 72
  3. ADD 6
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2 years ago
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The ______________ of a sample statistic is the probability distribution of the population of all possible values of the sample
enot [183]

Answer:

Sampling distribution

Step-by-step explanation:

The sampling distribution of a sample statistic is the probability distribution of the population of all possible values of the sample statistic.

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A teacher asked the class to write an expression that Which of these expressions have an estimated
valkas [14]

Answer:

9.7 x 2.84 and 6.25 x 4.76

Step-by-step explanation:

they are the only two that get close to 30 without getting over it

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