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tatiyna
4 years ago
14

Select the correct answer.

Mathematics
1 answer:
Stels [109]4 years ago
7 0

Answer:

b inverse property of multiplication

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8/6 20/x the figures are similar find x
Lana71 [14]
The process:

8/6 = 20/x

You would have to cross multiply first.

8  20    6×20= 120
6    x    8×x=8x

Then you rearrange the equation,

120=8x

And you divide by 8 ( because it has the variable next to it)

120÷8=15

So, x=15
6 0
3 years ago
Graph the image of this figure after a dilation with a scale factor of 1/3
aliya0001 [1]

Answer:

(-1,1), (1,3), (2,2)

Step-by-step explanation:

To dilate an object, we need to multiply the x and y values by the given scale factor.

In this case the scale factor is 1/3 --> 1/3(x, y)

Before-> After dilation

1/3(-3,3) = (-1,1)

1/3(3,9) = (1,3)

1/3(6,6) = (2,2)

Please leave a 'thanks' if this helps!

8 0
3 years ago
Vail Resorts pays part-time seasonal employees at ski resorts on an hourly basis. At a certain mountain, the hourly rates have a
notsponge [240]

Answer:

z=0.842

And if we solve for a we got

\mu=13.16 +0.842*3=15.69

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

X \sim N(\mu,3)  

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

P(X>13.16)=0.20   (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 0.80 of the area on the left and 0.20 of the area on the right it's z=0.842. On this case P(Z<0.842)=0.8 and P(z>0.842)=0.20

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=0.842

And if we solve for a we got

\mu=13.16 +0.842*3=15.69

3 0
3 years ago
What is the lowest common factor of 240 and 1500
stepan [7]
The lowest common factor of 240 and 1500 ... and of any other group of numbers ... is ' 1 '.
5 0
3 years ago
What is sqrt{4} times sqrt{4}
Lera25 [3.4K]

Answer:

Step-by-step explanation:

D

7 0
3 years ago
Read 2 more answers
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