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uranmaximum [27]
3 years ago
10

Which expression is equivalent to 1/2b-15

Mathematics
1 answer:
Helen [10]3 years ago
3 0

Answer:

b/2-15

or

-15+1/2b

or

b:2-15

Step-by-step explanation:

which expression is equivalent to 1/2b-15

b/2-15

or

-15+1/2b

or

b:2-15

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Step-by-step explanation:

just plug in 9 for every X making sure they equal each other.

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A rectangular of 260 in.³ its width is 5 inches and its length is 8 inches the height of the prism is____in?
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The amount of corn chips dispensed into a 10-ounce bag by the dispensing machine has been identified aspossessing a normal distr
timurjin [86]

Answer:

The probability that the sample mean weight of these 400 bags exceeded 10.6 ounces is P(Xs>10.6)=0.

Step-by-step explanation:

When we take samples of size n=400, we have the folllowing parameters for the sampling distribution for the sample means:

\mu_s=\mu=10.5\\\\ \sigma_s=\dfrac{\sigma}{\sqrt{n}}=\dfrac{0.1}{\sqrt{400}}=\dfrac{0.1}{20}=0.005

We can calculate the probability that the sample mean weight of these 400 bags exceeded 10.6 ounces calculating the z-score for Xs=10.6 and then its probability P(Xx>10.6), using the standard normal distribution:

z=\dfrac{X_s-\mu_s}{\sigma_s}=\dfrac{10.6-10.5}{0.005}=\dfrac{0.1}{0.005}=20\\\\\\P(X_s>10.6)=P(z>20)=0

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