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andre [41]
3 years ago
10

A statistical survey found that 20% of cars are red, and 10% are electric cars. It was further discovered that of all cars that

are either red or electric, 50% are both red and electric. a) What is the probability P[R ∩ E] that a car is both red and electric? b) What is the conditional probability P[E|R] that a red car is electric? c) What is the conditional probability P[R|E] that an electric car is red?
Mathematics
1 answer:
Flauer [41]3 years ago
5 0
Yes is red .............
You might be interested in
Simplify 3 / 3 + 3 to the second power 4 subtract 2
Natasha2012 [34]

Answer:

Answer = 2.528

Step-by-step explanation:

(3/4)*-2/(4/5)*-3*(3/5)*-2

firstly convert the negative powers into positive:(4/3)*2/(5/4)*3*(5/3)*2

so it will be as:(16/9)/(64/125)*(25/9)

for making it easy make reciprocal of the second and change division into multiplication :(16/9*64/125)----16*64=1024 and 9*125=1125

divide both number now---->0.190

now multiply that with:0.190*25/9

Then gets you the answer.

3 0
3 years ago
Nate wants to visit his friend Mac before going to the park. Nates house is located at (-2,4) while the park is located at (10,2
defon

Answer:

(4, 3)

Step-by-step explanation:

If a point O(x, y) divides a line segment AB with end points at A(x_1,y_1) and      B(x_2,y_2) in the ratio of n:m, then the location of O is at:

x=\frac{n}{n+m} (x_2-x_1)+x_1\\\\y=\frac{n}{n+m} (y_2-y_1)+y_1

Given that Nates house is located at (-2,4) while the park is located at (10,2). Macs house if it is 1/2 of the distance from Nates house to the park (that is in the ratio of 1:1). Let (x, y) be the coordinate of Macs house, therefore:

x=\frac{1}{2}(10-(-2))+(-2)=\frac{1}{2}(12)-2=6-2\\\\x=  4\\\\y=\frac{1}{2}(2-4) +4=\frac{1}{2}(-2)+4\\\\y=3

The location of Macs house is (4, 3)

6 0
3 years ago
Can someone give me a answer key for Vocabulary Test Course 1 Chapter 4 Multiply and Divide Fractions​
serg [7]

Answer:https://quiz.let.com/216018638/course-1-chapter-4-multiply-divide-fractions-6ns1-6rp3-3d-flash-cards/

remove the period between quiz and let but there is a quizlet on it

Step-by-step explanation:

5 0
3 years ago
The symphonic choir and the jazz choir are recording songs for an album. The album can be no more than 72 minutes long. The jazz
zimovet [89]

Answer:

The symphonic choir can record a maximum of 14 songs.

Step-by-step explanation:

We know that the album cannot be more than 72 minutes long, and the jazz choir records a total of 7 (3min) = 21  song minutes.

If we call c the number of songs the symphonic choir records , and each song is 3.5 minute long, then the song minutes for the symphonic choir are 3.5c; therefore, we have the inequality

3.5c+21\leq 72<em> (this says the song minutes for jazz choir plus song minutes for symphonic choice cannot exceed 72 minutes )</em>

We solve this inequality by subtracting 21 from both sides and then dividing by 3.5:

3.5c\leq 51

$c\leq \frac{51}{3.5} $

c\leq 14.47

The maximum integer value c can take is 14; therefore, the maximum number of songs the symphonic choir can record is 14 songs.

3 0
3 years ago
I need help dont get it
Mariulka [41]

Answer:

a.) y= 25 + 5x

b.) 45$

Step-by-step explanation:

25$ from the start and adds 5 for extra

y= 25+5(4)

y=25+20

y=45$

7 0
3 years ago
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