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Amanda [17]
3 years ago
14

On October 2, 1991 , the Japanese yen was worth .0075 united States . At that time how much was 450 yen worth in united States d

ollars
Mathematics
1 answer:
lesya [120]3 years ago
8 0
In order to find out how much 450 yen was worth in U.S dollars, all you have to do is multiply 0.0075 by 450. 

0.0075 * 450 = 3.375 

Meaning that 450 yen at the time was worth approximately $3.40 when rounded.
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The speed of sound in water is 1498 m/s. a sonar signal is sent straight down from a ship at a point just below the water surfac
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The 1.8 s is the time for the signal to reach the ocean floor and return to the ship so the time to reach ocean floor = 1.8 / 2 = 0.90 seconds.
depth of ocean = speed * time

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Find the midpoint of line AB.<br> A(-4,2) B(0,-4)
Blababa [14]
You could solve this mathematically but i mean you could use your eyes.... Its most likely C

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6 0
3 years ago
Read 2 more answers
Which fraction is the smallest? A. 5⁄6 B. 2⁄3 C. 3⁄5 D. 11⁄15
BabaBlast [244]

Answer:

C

Step-by-step explanation:

5/6=0.83

2/3=0.66

3/5=0.60

11/15=0.73

by changing them to a decimal you get a better look at the amounts they are work and it puts them in a common value.From this you can see that 3/5 is the lowest fraction form the groups so your answer would be <u>C</u>

6 0
3 years ago
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Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.5
masya89 [10]

Answer:

z= \frac{3.44-2.54}{0.45}=2

P(X>3.44) = P(Z>2) = 0.025

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the grade points avergae of a population, and for this case we know the following properties

Where \mu=2.54 and \sigma=0.45

The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is a statistical rule which states that for a normal distribution, almost all data falls within three standard deviations (denoted by σ) of the mean (denoted by µ). Broken down, the empirical rule shows that 68% falls within the first standard deviation (µ ± σ), 95% within the first two standard deviations (µ ± 2σ), and 99.7% within the first three standard deviations (µ ± 3σ).

So we can find the z score for the value of X=3.44 in order to see how many deviations above or belowe we are from the mean like this:

z= \frac{3.44-2.54}{0.45}=2

So the value of 3.44 is 2 deviations above from the mean, so then we know that the percentage between two deviations from the mean is 95% and on each tail we need to have (100-95)/2 = 2.5% , because the distribution is symmetrical, so based on this we can conclude that:

P(X>3.44) = P(Z>2) = 0.025

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What is the image of (0,8) after a dilation by a scale factor of 1/2 centered at the origin?
Agata [3.3K]

Answer:(0,4)

Step-by-step explanation:

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