3 years ago

Given a+b=7 and a–b=3, find: 2^a·2^b

Mathematics

1 answer:

atroni [7]3 years ago

3 0

Answer:

128

Step-by-step explanation:

thank me later

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Answer:

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Step-by-step explanation:

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A circular tabletop has a circumference of 94.2 inches. What is its area? Approximate Π as 3.14.

sattari [20]

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olga_2 [115]

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Step-by-step explanation:

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3 years ago

If you flip the five coins, and the probability of one coin being "tails" is 0.50, what is the probability of getting "tails" on

jenyasd209 [6]

Answer: 0.03125

Step-by-step explanation:

We know that the probability of getting a tail , we toss a fair coin = 0.5

Given : Total number of trials = 5

Using binomial probability formula :

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where P(x) is the probability of getting success in x trails, n is total number of trials and p is the probability of getting success in each trial.

The probability of getting "tails" on all five coins :_

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Hence, the probability of getting "tails" on all five coins =0.03125

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