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lilavasa [31]
4 years ago
14

A radio disc jockey has 8 songs on this upcoming hour's playlist: 2 are rock songs, 2 are reggae songs, and 4 are country songs.

the disc jockey randomly chooses the first song to play, and then she randomly chooses the second song from the remaining ones. what is the probability that the first song is a reggae song and the second is a rock song? write your answer as a fraction in simplest form.
Mathematics
1 answer:
JulsSmile [24]4 years ago
4 0
P(Reggae) = 1/4
P(Rock) = 1/4

Probability of one after the other is 1/4 × 1/4 = 1/16
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<h2 />

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3 years ago
Susan is writing a linear equation for the cost of her cell phone plan. In the first month, she talks for 52 minutes and is char
Alex787 [66]
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so    19.41=25x+b for the first month
and  45.65=380x+b for the second month

solve both for b you get:
19.41-25x=b and 45.65-380x=b.  from this we get
19.41-25x=45.65-380x

solve for x

328x=26.24 and x=0.08

this means the cost per minute is 0.08c/min (answer A)

rewrite the equation to calculate b, and where this time, the x is the number of minutes talked.

y=0.08x+b and plug in one of the two months

45.65=0.08 * 380 + b

Solve for b and b is 15.25

so the final equation is

y=0.08x+15.25  (answer B)
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Step-by-step explanation:

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Question b is incomplete

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Given the masses of the 6 insects below :

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Mass (m) greater than 8.55 g

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Hence, Ethan

(b) Write the name of the stick insect with m s 7.155 g

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