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VladimirAG [237]
3 years ago
10

Write an expression to show the sum of , , and .

Mathematics
2 answers:
stiks02 [169]3 years ago
3 0
You should put a picture of the problem so I can help
Rufina [12.5K]3 years ago
3 0
How do i help with this
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A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 48.0 and 58.
Yanka [14]

Answer: 0.025

Step-by-step explanation:

Given : A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between the interval [48.0 minutes, 58.0 minutes].

The probability density function :-

f(x)=\dfrac{1}{58-48}=\dfrac{1}{10}

Now, the probability that a given class period runs between 50.25 and 50.5 minutes is given by :-

\int^{50.5}_{50.25}\ f(x)\ dx\\\\=\int^{50.5}_{50.25}\ \dfrac{1}{10}\ dx\\\\=\dfrac{1}{10}|x|^{50.5}_{50.25}\\\\=\dfrac{1}{10}\ [50.5-50.25]=\dfrac{1}{10}\times(0.25)=0.025

Hence, the probability that a given class period runs between 50.25 and 50.5 minutes =0.025

Similarly , the probability of selecting a class that runs between 50.25 and 50.5 minutes = 0.025

5 0
2 years ago
Claires mother is 4 years more than twice claires age
Zina [86]

m= 4+ 2c is true if m is claires mom and c is claire

5 0
3 years ago
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Hugo took these steps to solve the system of equations.
KengaRu [80]

Answer:

C

Step-by-step explanation:

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2 years ago
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How many solutions does this equation have?<br> (15x + 21) / 3<br> = 5x + 7
Lesechka [4]

Answer:

3*(5*x-7)-(15*x-21)=0

Step-by-step explanation:

3 • (5x - 7) -  (15x - 21)  = 0

Step  2  :

Equation at the end of step  2  :

 0  = 0

Step  3  :

Equations which are always true :

7 0
3 years ago
Each of the 13 members of a basketball team bought a team emblem. The emblems cost the team 78 dollars. How much did it cost eac
Irina-Kira [14]

Answer:

$6

Step-by-step explanation:

78/13=6

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3 years ago
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