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EastWind [94]
4 years ago
14

Write the number that is the sum. 6+4=10 5-3=2

Mathematics
1 answer:
shepuryov [24]4 years ago
5 0
I think it's 12. 10 plus 2 = 12. Correct me if I am wrong please.

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12 = m(-2) <br> What is m?
Svet_ta [14]

Answer:6

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A book claims that more hockey players are born in January through March than in October through December. The following data sh
astra-53 [7]

Answer:

\chi^2 = \frac{(67-47.5)^2}{47.5}+\frac{(56-47.5)^2}{47.5}+\frac{(30-47.5)^2}{47.5}+\frac{(37-47.5)^2}{47.5}=18.295

Now we can calculate the degrees of freedom for the statistic given by:

df=(categories-1)=4-1=3

And we can calculate the p value given by:

p_v = P(\chi^2_{3} >18.295)=0.00038

Since the p value is very low we have enough evidence to reject the null hypothesis and we can conclude that the players' birthdates are not uniformly distributed throughout the​ year

Step-by-step explanation:

We need to conduct a chi square test in order to check the following hypothesis:

H0: There is no difference of birthdates distributed throughout the​ year

H1: There is a difference between birthdates distributed throughout the​ year

The level of significance assumed for this case is \alpha=0.05

The statistic to check the hypothesis is given by:

\sum_{i=1}^n \frac{(O_i -E_i)^2}{E_i}

The table given represent the observed values, we just need to calculate the expected values with the following formula E_i = \frac{total}{4}

And replacing we got:

E_{1} =\frac{67+56+30+37}{4}=47.5

And now we can calculate the statistic:

\chi^2 = \frac{(67-47.5)^2}{47.5}+\frac{(56-47.5)^2}{47.5}+\frac{(30-47.5)^2}{47.5}+\frac{(37-47.5)^2}{47.5}=18.295

Now we can calculate the degrees of freedom for the statistic given by:

df=(categories-1)=4-1=3

And we can calculate the p value given by:

p_v = P(\chi^2_{3} >18.295)=0.00038

Since the p value is very low we have enough evidence to reject the null hypothesis and we can conclude that the players' birthdates are not uniformly distributed throughout the​ year

3 0
4 years ago
In the diagram, . Triangles P M N and Q S R are shown. The lengths of sides P N and R Q are congruent, the lengths of sides Q S
nika2105 [10]

Answer:

20 inches

Step-by-step explanation:

It is because QS and PN are congruent.

4 0
3 years ago
Read 2 more answers
If 2a =-10 then -6a=
suter [353]

If 2a = -10, that means a = -5 Because 2(-5) makes -10.

Thus, -6(-5) = 30 #

Therefore, -6a = 30

4 0
3 years ago
What is -5 7/50 as a decimal
BlackZzzverrR [31]

Answer:

5.14

Step-by-step explanation:

8 0
4 years ago
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