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NikAS [45]
3 years ago
9

A business owner noted the features of the 100 100100 cars parked at the business. Here are the results: Sunroof2 doors4 doors 2

5 25 14 14 13 13 0 0 20 20 18 18 0 0 10 10 In this sample, are the events " 2 22 doors" and " 4 44 doors" mutually exclusive? Choose 1 answer: Choose 1 answer: (Choice A) A Yes (Choice B) B No Find the probability that a randomly selected car from this sample had 2 22 doors or 4 44 doors. P ( 2 doors OR 4 doors ) = P(2 doors OR 4 doors)=P, left parenthesis, start text, 2, space, d, o, o, r, s, space, O, R, space, 4, space, d, o, o, r, s, end text, right parenthesis, equals
Mathematics
1 answer:
Brums [2.3K]3 years ago
4 0

Question:

In this sample, are the events "222 doors" and "444 doors" mutually exclusive?

Answer to question above: Yes

Answer to big question:

P( 2 doors OR 4 doors) = 0.77

Step-by-step explanation:

14 + 18 + 20 + 25 + 0 + 0 = 77 of the 100 cars that had two doors or four doors.

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Laptops that sell for $660 are on sale with a percent discount of 7%. Find the sale price. Round your answer to the nearest cent
ivann1987 [24]

Answer:

$613.80

Step-by-step explanation:

7% of 660 = 0.07 × 660 = 46.2

660 - 46.2 = 613.80

6 0
2 years ago
Suppose you have a bag of colored plastic disks and you choose one without looking. The probability the disk you choose is yello
Ostrovityanka [42]

Answer: 0.2

Step-by-step explanation:

Since the probability that the disk chosen is 5/25, thus can be written in decimal as 0.2.

This means that in a bag of 15 colored plastics discs with different colors, the probability of picking a yellow colored disk is 0.2.

8 0
3 years ago
Write the equation of the circle whose center is (-5, -8) with diameter 12
lora16 [44]

Answer:

(x + 5)^2 + (y + 8)^2 = 6^2

Step-by-step explanation:

A circle formula: (x - h)^2 + (y - k)^2 = r^2

We are given diameter. To find the radius divide diameter by 2.

d = 12

12/2 = r = 6

H and K are given to be (-5 , -8)

(x - (-5))^2 + (y - (-8))^2 = 6^2

(x + 5)^2 + (y + 8)^2 = 6^2

I have plot this equation to confirm my answer is correct where the origin is (-5 , -8) and has a radius of 6.

3 0
2 years ago
Divide £30 between 2 people in the ratio 1:2
yuradex [85]
1+2=3.
30/3=10
10x1=10
10x2=20
So the answer would be £10:£20
And to check if it’s right £10 + £20= £30
3 0
3 years ago
Read 2 more answers
You go to an arcade and purchase a card with game credits. After playing 5 games you have 33 credits left. You play 4 more games
Amanda [17]

Answer:

y=-3x+48

Step-by-step explanation:

We will use slope-intercept form of equation to write our equation. The equation of a line in slope-intercept form is: y=mx+b, where m= Slope of the line, b= y-intercept.

To write the equation that represents the number of credits y on the cards after x games, we will find slope of our line.

We have been given that after playing 5 games we have 33 credits left. We play 4 more games and we have 21 credits left. So our points will be (5,33) and (9,21).

Let us substitute coordinates of our both given points in slope formula: m=\frac{y_2-y_1}{x_2-x_1},

m=\frac{21-33}{9-5}

m=\frac{-12}{4}=-3

Now let us substitute m=-3 and coordinates of point (5,33) in slope intercept form of equation to find y-intercept.

33=-3\cdot 5+b    

33=-15+b    

33+15=b    

48=b    

Upon substituting m=-3 and b=48 in slope-intercept form of an equation we will get,

y=-3x+48

Therefore, our desired equation will be y=-3x+48.

6 0
3 years ago
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