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qwelly [4]
3 years ago
8

Ryan has 3 red lava lamps and 3 blue lava lamps. he arranges them in a row on a shelf randomly, and then randomly turns 3 of the

m on. what is the probability that the leftmost lamp is blue and off, and the rightmost lamp is red and on?
Mathematics
2 answers:
Luden [163]3 years ago
6 0

Answer:

The answer is 7/20 :)

Step-by-step explanation:

P(leftmost lamp = red) = ½  

Leftmost must be red (1/2) and so must the leftmost lit lamp(2/5)

 

(1/2)(1/2) + (1/2)(1/2)(2/5) = 7/20  :)

alex41 [277]3 years ago
3 0
Well. U have 6 lamps and we r turning in 3 and the probability of 1 being red is 16.666% u would do 1/6 as a percentage because I are only trying to find if that one is red. Hope this helps! ☺️
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I don't really understand the question so can someone help me answer the question please?​
Ksivusya [100]

Answer:

1/ 3

Step-by-step explanation:

If each of the cards is turned over, the probability of picking up a card of one type P(E) becomes equal to:

=> P(E) = number of cards of the required type/ total number of cards

● Total number of spades( ♤ ) = 3

{the queen, one ace and the nine are all spades}

● Total number of cards = 6

Probability of drawing a spade= 3/ 6

= 1/ 2

● Total number of "7" = 1

● Total number of cards = 6

Probability of drawing a 7

= 1/ 6

Now, what's asked is the difference in the probabilities of drawing a spade and a seven.

= 1/ 2 - 1/ 6

= 3/ 6 - 1/ 6

= 2/ 6

= 1/ 3

Hence, 1/ 3 of a greater chance of drawing a spade over a 7.

5 0
2 years ago
Jamie says that the expression 6x-2x+4 and 4(x+1) are not equivalent because one expression has a term that is subtracted and th
Sati [7]

Answer:

1. D 2. A 3. Distribute the four in 4(x+1)

Step-by-step explanation:

1. It says that Jamie is saying that they are "not equivalent".

2. You have to use the distributive property to distribute the 4 to x and to the 1.

3. After distributing, compare the two expressions and now see if they are equivalent or not.

8 0
3 years ago
Does this represent a function {(-1,-8), (7,1), (3,3), (1,1)}
UkoKoshka [18]

Answer:

Yes

Step-by-step explanation:

(x,y)

Since all the domains (x) are different, this set of number is a function. In a function, the range (y), can repeat.

7 0
2 years ago
Finish the value of d 2d - 5 = 17
Mkey [24]
D is 11

2d - 5 = 17                          add 5 to both sides

2d = 22                               divide by 2

d = 11                                 answer
8 0
3 years ago
Please help best gets brainlist and 5/5 and show work please
adelina 88 [10]
The answer is 12ft

Volume = (base area)(height)
900 = (75)(x)

So to figure out x you’ll need to divide 900 by 75 to get 12

Hope this helps!
4 0
2 years ago
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