3 years ago

Solve for x: 1 < x + 3 < 4

Mathematics

1 answer:

FrozenT [24]3 years ago

7 0

Answer:

-3 < x < 0

Step-by-step explanation:

1 < x + 3 < 4

-3 < x < 0

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For a certain horse race comma the odds in favor of a certain horse finishing in second placehorse race, the odds in favor of a

NikAS [45]

Answer:

0.33

Step-by-step explanation:

Let A denote an event. The odds of the horse finishing second is 33 to 67.

From the information, the total outcomes of event A is:

$Total \ Outcomes, A=Favorable +Unfavorable\\\\=33+67\\\\=100$

Hence, there are 100 total outcomes. The probability of the horse finishing second is calculated as:

$p=\frac{n(A_f)}{n(A_u)}\\\\\\=p=\frac{33}{100}\\\\=0.33$

Hence, the probability of finishing second is 0.33

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3 years ago

In a large bag of marbles, 20% of them are red. A child chooses 4 marbles from this bag. If the child chooses the marbles at ran

lubasha [3.4K]

Answer:

0.0256

Step-by-step explanation:

Assuming a binomial model, with probability of success (getting a red marble) p = 0.20. The probability of obtaining 'k' successes in 'n' trials is:

$P(x=k)=\frac{n!}{(n-k)!k!}*p^k*(1-p)^{n-k}$

For k = 3 red marbles in n = 4 trials:

$P(x=3)=\frac{4!}{(4-3)!3!}*0.20^3*(1-p)^{4-3}\\P(x=3)=4*0.20^3*0.8\\P(x=3) = 0.0256$

The probability that the child gets exactly three red marbles is 0.0256.

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3 years ago

A roll of plastic electrical tape costs 2.79$. If the sales tax rate is 5% then how much sales tax is being charged?

tatyana61 [14]

Answer:

$0.1395

Step-by-step explanation:

$2.79 x 0.05 = 0.1395

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3 years ago

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3 years ago

What is the greatest common factor of 15 and 16?

Lostsunrise [7]

Easy, it is 1. I hope that helps =D

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3 years ago