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3 years ago

7

In 2012, the population of China was about 1.351 x 10^9 and the population of Japan was about 1.280 x 10^8. Based upon these est

imates, approximately how many more people lived in China than in Japan in 2012?

1 answer:

Brilliant_brown [7]3 years ago

5 0

Answer:

7 x10^6

Step-by-step explanation:

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Natalija [7]

Hello there!

The answer would be C since we are looking to find how far she ran based on the amount of miles that has passed.

As stated above, 6 minutes. However to find out how far she runs we have to change the speed to miles per minute.

6 minutes per mile is equal to 1/6 of a mile per minute

Formula for Distance is speed x time

The distance is d, the time is t and the speed is 1/6.

Plug it in:

d = 1/6t

Lastly, multiply by 6 on both sides.

d x 6 = 1/6t x 6

1/6 x 6 = 1t

6d = 1t

Answer: t= 6d

5 0

3 years ago

Of 450 college students, 110 are enrolled in math, 205 are enrolled in English, and 50 are enrolled in both. If a student is sel

likoan [24]

Answer:

Step-by-step explanation:

Given that Of 450 college students, 110 are enrolled in math, 205 are enrolled in English, and 50 are enrolled in both. If a student is selected at random

the probability

(a) The student is enrolled in mathematics= $\frac{110}{450} =0.244\\$

(b) The student is enrolled in English.= $\frac{205}{450} =0.456\\$

(c) The student is enrolled in both.= $\frac{50}{450} =0.111\\$

(d) The student is enrolled in mathematics or English.= $\frac{110+205-50}{450} =0.589\\$

(e) The student is enrolled in English but not in mathematics.

= $\frac{205-50}{450} =0.344\\$

(f) The student is not enrolled in English or is enrolled in mathematics.

= $\frac{450-205+110}{450} =0.7889\\$

8 0

3 years ago

Keisha has a straightedge and a compass, but no protactor. what kind of angle can Keisha drag exactly with only these two tools?

nekit [7.7K]

A 90˚ angle
a 180 angle

6 0

3 years ago

The table below shows the results of a survey conducted among the employees of a company to find the preferred choices for inves

gladu [14]

Answer: B

Step-by-step explanation:

Took the test

6 0

3 years ago

A city police officer using radar checked the speed of 26 cars as they were travelling down a city street and the data is given

pychu [463]

Answer: The distribution of the data set is positively skewed.

<u>Explanation: </u>

In order to see whether the given data set is symmetric, positively skewed or negatively skewed, we will find the mean, median and mode of the given data set.

For symmetric distribution, $Mean = Median=Mode$

For positively skewed distribution, $Mean > Median>Mode$

For negatively skewed distribution, $Mean < Median$

The mean of the given data set is given below:

$Mean = \frac{27+23+22+38+43+24+25+23+22+54+31+30+29+48+27+25+29+28+26+33+25+21+23+34+20+23}{26}$

$=\frac{753}{26}$

$=28.96$

Now, the Median is:

To find the median we need to sort the data in ascending order as:

$20,21,22,22,23,23,23,23,24,25,25,25,26,27,27,28,29,29,30,31,33,34,38,43,48,54$

$Median=\left(\frac{N+1}{2} \right)^{th} item$

$=\left(\frac{26+1}{2}\right)^{th} item$

$=13.5^{th} item$

$=26+0.5 \times (27-26)$

$=26.5$

$\therefore Median = 26.5$

The mode is the most frequently occurring observation. Therefore the mode is:

$Mode=23$

Since the $Mean >Median>Mode$ , therefore the distribution of the given data set is positively skewed.

5 0

4 years ago