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Orlov [11]
3 years ago
6

There is a 85% probability that Jack's dad gives him permission to go to the movies tonight. There is a 60% chance that he will

be able to go to the movies and drive his car there alone. What is the probability that he will be able to drive to the movies alone given that his dad gives him permission to go?
Mathematics
1 answer:
kykrilka [37]3 years ago
5 0

Answer:

<u>The probability that Jack will be able to drive to the movies alone given that his dad gives him permission to go is 51%.</u>

Step-by-step explanation:

1. Let's check the information provided to us to answer the question correctly:

Probability that Jack's dad gives him permission to go to the movies tonight = 85% = 0.85

Probability that Jack will be able to go to the movies and drive his car there alone= 60% = 0.60

2. What is the probability that he will be able to drive to the movies alone given that his dad gives him permission to go?

For answering the question we will use the following formula for dependent events, given that Jack's father gave him permission to go:

Probability that Jack will be able to drive to the movies alone given that his dad gives him permission to go = Probability that Jack's dad gives him permission to go to the movies tonight * Probability that Jack will be able to go to the movies and drive his car there alone

Replacing with the real values, we have:

Probability that Jack will be able to drive to the movies alone given that his dad gives him permission to go = 85% * 60%

Probability that Jack will be able to drive to the movies alone given that his dad gives him permission to go = 0.85 * 0.60 = 0.51

<u>The probability that Jack will be able to drive to the movies alone given that his dad gives him permission to go is 51%.</u>

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Pls pls help, thank you &lt;3
Reika [66]

Answer:

  (x -1)² +(y -4)² = 25

Step-by-step explanation:

The equation of a circle in standard form is ...

  (x -h)² +(y -k)² = r² . . . . . . . circle with center (h, k) and radius r

The graph shows your circle has its center at (1, 4) and its radius is 5. Then the equation is ...

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3 years ago
Are 12/17 and 10/15 equivalent fractions
Sholpan [36]
Nope. because 10/15 can be reduced to 2/3 and 12/17 is in its final form.
5 0
3 years ago
Two college roommates have each committed to donating to charity each week for the next year. The roommates’ weekly incomes are
schepotkina [342]

Answer:

C. 5 weeks.

Step-by-step explanation:

In this question we have a random variable that is equal to the sum of two normal-distributed random variables.

If we have two random variables X and Y, both normally distributed, the sum will have this properties:

S=X+Y\\\\\ \mu_S=\mu_X+\mu_Y=30+60=90\\\\\sigma_S=\sqrt{\sigma_X^2+\sigma_Y^2}=\sqrt{10^2+20^2}=\sqrt{100+400}=\sqrt{500}=22.36

To calculate the expected weeks that the donation exceeds $120, first we can calculate the probability of S>120:

z=\frac{S-\mu_S}{\sigma_S} =\frac{120-90}{22.36}=\frac{30}{22.36}=1.34\\\\P(S>120)=P(z>1.34)=0.09012

The expected weeks can be calculated as the product of the number of weeks in the year (52) and this probability:

E=\#weeks*P(S>120)=52*0.09012=4.68

The nearest answer is C. 5 weeks.

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3 years ago
A human resource manager is researching the entry-level salary for a technician position. She determined that other companies in
Sever21 [200]
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3 years ago
Yolanda's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Yolanda $5.20 per pound, and t
MAXImum [283]

Answer:

78 pounds

Step-by-step explanation:

Let's say Yolanda makes a pounds of Type A coffee and b pounds of Type B coffee. Since the total number of pounds is 130, we can write the equation:

a + b = 130

We know the cost of Type A coffee is $5.20/lb and the cost of Type B coffee is $4.05/lb, so since the total cost is $586.30, we can write:

5.20a + 4.05b = 586.30

We can now solve the system of equations:

a + b = 130

5.20a + 4.05b = 586.30

Manipulate the first equation by subtracting b from both sides:

a + b = 130

a = 130 - b

Substitute 130 - b for a in the second equation:

5.20a + 4.05b = 586.30

5.20 * (130 - b) + 4.05b = 586.30

676 - 5.20b + 4.05b = 586.30

Move the terms with b to one side:

1.15b = 89.70

b = 78

Thus, Yolanda used 78 pounds of Type B coffee.

<em>~ an aesthetics lover</em>

7 0
3 years ago
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