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Sphinxa [80]
3 years ago
6

Laura is working on an art project she needs a rusty iron nail for her art work so she places a shiny new nail outside in it wet

locations how will the air and water change the nail
Mathematics
2 answers:
posledela3 years ago
6 0
It will make a chemical change that will make the iron rust in contact with oxygen and water.
Katarina [22]3 years ago
5 0
Water is something that leads things to rust. Exposure to air also leads things to rust. Exposure to both of them will completely rust the nail if given time. 
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A random sample of 2 measurements is taken from the following population of values: 0, 1, 3, 4, 7. What is the probability that
mafiozo [28]

Answer:

1/5

Step-by-step explanation:

Range as a measure of central tendency is the difference between the highest value and the lowest value in a given set of data.

Given the samples 0,1,3,4,7

Total number of samples is 5

The range is gotten by taking the difference of 2 samplesout of 5samples and this can be done in 5C2 ways.

5C2 = 5!/(5-2)!2!

= 5!/3!2!

= 5×4×3!/3!×2

= 10ways

The total outcome is therefore 10

To get the probability that the range is 4, we need to get the required outcome of getting range of 4 and this can only occur twice

The range can be gotten by taking the difference between 7 and 3, it can also be gotten by taking the difference between 4 and 0. Both differences will give us a total of 4

The expected outcome is therefore 2

the probability that the range of the sample is 4 = expected outcome/total outcome

= 2/10

= 1/5

7 0
3 years ago
Which table shows a proportional relationship between x and y? A. x y 2 4 3 6 4 9 B. x y 3 4 9 16 15 20 C. x y 4 12 5 15 6 18 D.
KiRa [710]

Answer:

C.

Step-by-step explanation:

The relationship is proportion if y/x is constant.

So it is C because 12/4 = 15/5 = 18/6 = 3.

3 0
3 years ago
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Use the zero product property to find the solutions to the equation x^2-15x-100=0
Helen [10]

Answer:

It’s c

Step-by-step explanation:

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2 years ago
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Mariana [72]
-20 feet



that would be the number closest to 0
4 0
3 years ago
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grandymaker [24]
It sounds like initially we have a total of 18*5 = 90. Then we are adding 5 + 4 +3 +2 +1 to this.
so that gives us 105.

105/5 = 21
6 0
3 years ago
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