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valina [46]
3 years ago
11

In the following exercises, find the greatest common factor.15y3, 21y2, 30y

Mathematics
1 answer:
Lelechka [254]3 years ago
6 0

Answer:

<h2>3y</h2>

Step-by-step explanation:

each term has at least y^1

each term's coeficient is a factor of 3

3y(5y^2, 7y, 10)

<h2>3y is the GCF</h2>
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Will the product be more or less than 9 8/9
solniwko [45]
It would be less because when you multiply something by 1/2 you are basically dividing it by 2, finding half. So when you multiply 9 8/9 by 1/2 your product would be less than 9 8/9
5 0
3 years ago
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It takes you 5 hours to complete a 375-kilometer trip. What was your average speed on this trip?
morpeh [17]

Answer:

75

Step-by-step explanation:

V=S/T(the formula)

V= 375/5

V=75

4 0
3 years ago
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Tell you what (since some of y’all wanna lurk), imma start speaking your language. I’ll give 61 points to whomever can help me o
Alla [95]

the first answer is 14

the second answer is 0.2

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3 years ago
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A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys
Luba_88 [7]

Answer:

z=-1.28

And if we solve for a we got

a=470 -1.28*60=393.2

So the value of height that separates the bottom 10% (Fastest 10%) of data from the top 90% is 393.2.

so if the time is 393.2 or lower a boy would earn a certificate of recognition from the fitness association

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 time for this event of a population, and for this case we know the distribution for X is given by:

X \sim N(470,60)  

Where \mu=470 and \sigma=60

NOTE: For this case the fastest 10% is on the lower tail of the distribution

For this part we want to find a value a, such that we satisfy this condition:

P(X>a)=0.9   (a)

P(X   (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.  

As we can see on the figure attached the z value that satisfy the condition with 0.1 of the area on the left and 0.9 of the area on the right it's z=-1.28. On this case P(Z<-1.28)=0.1 and P(z>-1.28)=0.9

If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

z=-1.28

And if we solve for a we got

a=470 -1.28*60=393.2

So the value of height that separates the bottom 10% (Fastest 10%) of data from the top 90% is 393.2.

so if the time is 393.2 or lower a boy would  earn a certificate of recognition from the fitness association

4 0
3 years ago
Kyle wants to wrap the box in wrapping paper. A rectangular prism with a length of 18 inches, width of 6 inches, and height of 3
m_a_m_a [10]

Answer:

180 squared inches

Step-by-step explanation:

SA= L*W, L*H, H*W

108+54+18

=180

3 0
3 years ago
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