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e-lub [12.9K]
2 years ago
14

Jackson goes to the gym 0,2 or 3 days in a week, depending on work demands at the office. The probability that he goes 0 days is

0.1, the probability that he goes 2
days is 0.65, and the probability that he goes 3 days is 0.25. What is the expected value of the number of days per week for which Jackson goes to the gym?
A.
1.55
B.
2.05
C.
2.15
D.
2.50
E.
2.76
Reset
Next
Mathematics
1 answer:
Dmitry_Shevchenko [17]2 years ago
4 0
A & ddddddddddddddddddd
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The quotient of 9.2 x 10 6 and 2.3 x 10 2 expressed in scientific notation is
Virty [35]
What we know:
quotient 9.2 x 10^6/ 2.3 x 10²
in quotients exponents are subtracted of they have the same base, for example 10^6 and 10² have the same base of 10

What we need to find: quotient 9.2 x 10^6/ 2.3 x 10²
9.2 x 10^6        
--------------  =    4 x 10^4    
 2.3 x 10²

Here in this problem I divided 9.2 by 2.3 and got 4, since the solution was simple and clean meaning no repeated decimals I went ahead and divided the 10^6 by 10^2 and got 10^4.


Another method would be to expand both numbers then divide and do scientific notation again.
Remember to change to normal notation you move the decimal to the right using the number of the exponent.

9.2 x 10^6= 9200000
2.3 x 10²= 230

920000/230=40000

40000= 4 x 10^4 scientific notation

Use the method that is best for you or just know you can use either method to check your work.

4 0
2 years ago
Mr.Walden wrote the expression. He asked his students to write an equivalent expression of simplified form.
mafiozo [28]

Answer:

option D

Brianna

Step-by-step explanation:

Given in the question the expression wrote by Mr.Walden

\frac{p^{-5} }{q^{0} }

To write the simplified form of this expression we will use negative rule of exponent

b^{-n}= 1 / b^{n}

q^{-5} = \frac{1}{q^{5} }

so,

\frac{1}{q^{5} x q^{0} }

\frac{1}{q^{5} p^{0} }

Only Brianna wrote right simplification of the expression written by Mr.Walden

3 0
2 years ago
owen and needed to get his computer fixed he took it to the repair store the technician at the store worked on the computer for
meriva

To figure out this problem, let's set up an equation first to make it easier:

702.50 = 5.5x + 70

x = amount charged per hour

702.50 = 5.5x + 70

-70                   -70

-----------------------------

632.5 = 5.5x

/5.5       /5.5

--------------------

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Owen was charged $115 per hour

7 0
1 year ago
A bag contains 4 tan socks and 7 grey socks. emily reaches into the bag and randomly selects two socks without replacement. what
Y_Kistochka [10]
Tan socks = 4
Grey socks = 7
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Probability of picking a Grey sock then Tan sock
P(G)*P(T) = (7/11)*(4/10) = 14/55

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8 0
2 years ago
. En un concesionario de coches hay modelos de varios colores. Los rojos suponen 1 6 del total, los azules, 2 9 del total, y los
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Complete question :

En un concesionario de coches hay modelos de varios colores. Los rojos suponen 1/6 del total, los azules, 2/9 del total, y los blancos, 4/15 del total.

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b) Si hay 40 coches azules, ¿cuántos hay en total?

Responder:

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Explicación paso a paso:

Dado que:

Rojo = 1/6 del total

Azul = 2/9 del total

Blanco = 4/15 del total

Para determinar qué color es el más alto, convierta los valores en decimal:

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2.)

Sea Número total = x

Por lo tanto,

2/9 de x = 40

2x / 9 = 40

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4 0
2 years ago
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