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3 years ago

I don’t get this at all, can someone please help

Mathematics

1 answer:

JulsSmile [24]3 years ago

6 0

Answer:

m = 44

Step-by-step explanation:

USe the pythagoream thyroem a^2 + b^2 = m^2. so 10^2 + m = 12^2

or 100 + m = 144. subtract 100 from both sides, you get m = 44

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A number minus seven is nine.

lukranit [14]

Answer:

Your answer would be 16 - 7 = 9.

You can simply add the two numbers and it would still give you the same answer, but I decided to just look for the number.

Step-by-step explanation:

I hope this helped solve your question.

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3 years ago

-1+3cotx How do I graph this?

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3 years ago

Read 2 more answers

Suppose that a company prints baseball cards. They claim that 30% of the cards feature rookies, 60% feature veterans, and 10% fe

liraira [26]

Answer:

H0: The distribution of players featured on the cards is 0.30 rookies, 0.60 veterans, and 0.10 All-Stars.

Ha: At least one of the proportions in the null hypothesis is false.

Step-by-step explanation:

On this case we need to apply a Chi squared goodness of fit test, and the correct system of hypothesis would be:

H0: The distribution of players featured on the cards is 0.30 rookies, 0.60 veterans, and 0.10 All-Stars.

Ha: At least one of the proportions in the null hypothesis is false.

And in order to test it we need to have observed and expected values. On this case we can calculate the Expected values like this

$E_{rookies}=50*0.3=15$

$E_{veterans}=50*0.6=30$

$E_{All stars}=50*0.1=5$

The observed values are not provided. The statistic on this case is given by:

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

And this statistic follows a chi square distribution with k-1 degrees of freedom on this case k=3, since we have 3 groups.

We can calculate the p valu like this:

$P(\chi^2 > \chi^2_{calculated})=p_v$

And if the p value it's higher than the significance level we FAIL to reject the null hypothesis. In other case we reject the null hypothesis.

5 0

3 years ago

What is the solution of log(22+4) = log( 14-31)?

Assoli18 [71]

Answer: It is Undefined

Step-by-step explanation:

㏒(22+4)=log (14-31)
㏒(22+4)=log (-17)

Undefined

6 0

4 years ago

Six cell phones weigh 46.2 ounces. Fourteen cell phones weigh 107.8 ounces. What is the unit rate or constant of proportionality

iris [78.8K]

Answer:

Well first we must see if they are proportional. 

 

46.2/6 = 10.7.8/14 

7.7 = 7.7 

 

They are proportional. The rate of proportion is 7.7 ounces per cellphone. Hope this helps! 

Step-by-step explanation:

8 0

3 years ago