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erastovalidia [21]
3 years ago
15

Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn) have a completely filled outer electron shell and a

re therefore called inert gases. What do the inert gases have in common?
1.They behave similarly in chemical reactions
2.They have the same number of protons
3.They have the same number of electrons
4.They belong to the same period
Mathematics
2 answers:
Reika [66]3 years ago
7 0

Answer:

The answer would be 1.

Nana76 [90]3 years ago
5 0

Answer:

They behave similarly in chemical reactions

Step-by-step explanation:

Because their atomic numbers are different, the elements each have a different number of protons and electrons. They belong to the same group, not the same period.

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A bowling leagues mean score is 197 with a standard deviation of 12. The scores are normally distributed. What is the probabilit
Bond [772]

Answer:

0.281 = 28.1% probability a given player averaged less than 190.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

A bowling leagues mean score is 197 with a standard deviation of 12.

This means that \mu = 197, \sigma = 12

What is the probability a given player averaged less than 190?

This is the p-value of Z when X = 190.

Z = \frac{X - \mu}{\sigma}

Z = \frac{190 - 197}{12}

Z = -0.58

Z = -0.58 has a p-value of 0.281.

0.281 = 28.1% probability a given player averaged less than 190.

8 0
3 years ago
I will give BRAINLIEST!!! middle school math...
JulijaS [17]

Answer:

Solution given:

A(x,y))----reflection about x axis--->A'(x,-y)

P(2,1)---reflection about x axis----->Q(2,-1)

R(-6,-5)----reflection about x axis-->S(-6,5)

3 0
2 years ago
Read 2 more answers
2. Find the x and y<br> intercepts:<br> y = 1/2x+4
lawyer [7]

Answer:

y intercept = 4

x intercept = -8

Step-by-step explanation:

0 = x/2 + 4

-4 = x/2

-8 = x

y=mx+b

y = 1/2x+4

Y intercept = b, b= 4

6 0
3 years ago
Tak purchased 4 7/8 pounds of brown sugar. Each pound of the sugar equals 2 1/4 cups. What is the best estimate of the number of
ki77a [65]

Answer:

7 1/8

4 + 7/8 + 2 + 1/4

4+2=6

7/8 + 1/4=9/8 and 9/8 is equal to 1 1/8

6+1+1/8= 7 1/8

4 0
3 years ago
Which inequality is a true statement? Question 1 options: -4 &lt; -5 -4 ≤ -5 -4 &gt; -5 -4 ≥ -5 -4 = -5
Solnce55 [7]

Answer:

-4 > -5 is the correct answer

7 0
3 years ago
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