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3 years ago

Select the correct answer.

Mathematics

2 answers:

Scilla [17]3 years ago

6 0

Answer:

B. I think

Step-by-step explanation:

Anvisha [2.4K]3 years ago

6 0

Answer:

What is the difference of the values of the two variables in this system of equations?

y = 2x+1

x + 3y= 10

A. 0

B. 1

C. 2

D.3

the difference : there can be 2 possible answers for this..

x - y = 1 - 3 = -2 OR y - x = 3 - 1 = 2

Step-by-step explanation: i just know

it would be c

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NemiM [27]

Answer:

+/- 1.9983

Step-by-step explanation:

The critical values for a confidence interval for the population mean, with population standard deviation not known, are obtained from the student's t distribution.

The sample size is given as 64. The degrees of freedom will thus be;

sample size - 1 = 64 - 1 = 63

The confidence level is given as 95%. The level of significance will thus be;

100 - 95 = 5%.

The area in the right-tail will thus be 2.5%. Therefore, we looking for a t-value such that the area to its right is 2.5% and the degrees of freedom being 63. From the t-tables we have;

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3 years ago

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4 years ago

Which relationships describe the angle pair x° and 157º?

kompoz [17]

Step-by-step explanation:

supplementary angles.

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4 years ago

In which quadrant would point (-4.5, -4.5) be located

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3 years ago

A boiler has five identical relief valves. The probability that any particular valve will open on demand is 0.95. Assuming indep

Gre4nikov [31]

Answer:

a) There is a 99.99997% probability that at least one valve opens.

b) There is a 22.62% probability that at least one valve fails to open.

Step-by-step explanation:

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Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$