2 years ago

13. Which is an irrational number? A 45 B 9 Clo

Mathematics

2 answers:

hjlf2 years ago

6 0

Both of these are rational, so wHaT arE yoU tAlkIng aBouT

shusha [124]2 years ago

5 0

Both are irrational numbers . Means both of these

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A fire department in a rural county reports that its response time to fires is approximatelyNormally distributed with a mean of

____ [38]

Answer:

Option C) 0.25

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 22 minutes

Standard Deviation, σ = 11.9 minutes

We are given that the distribution of response time is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(response times is over 30 minutes)

P(x > 30)

$P( x > 30) = P( z > \displaystyle\frac{30 - 22}{11.9}) = P(z > 0.6722)$

$= 1 - P(z \leq 0.6722)$

Calculation the value from standard normal z table, we have,

$P(x > 30) = 1 - 0.749= 0.251 = 25.1\%$

Thus, the correct answer is

Option C) 0.25

3 0

2 years ago

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Naya needed to buy boxes of cupcakes for a party.Naya had $60 to spend on the boxes of cupcakes which were each $12.How many box

ivann1987 [24]

5 boxes .. 12 divided by 60

3 0

3 years ago

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Find the number that makes the ratio equivalent to 5:4.<br> :48

Orlov [11]

Answer:

Step-by-step explanation:

5:4 = 60:48

5 0

3 years ago

What is 1/144 as an expression using a negative exponent

MrRissso [65]

ANSWER

${12}^{ - 2}$

EXPLANATION

The given expression is

$\frac{1}{144}$

This is the same as:

$\frac{1}{12 \times 12}$

In index notation, we write this as

$\frac{1}{ {12}^{2} }$

To write this as a negative index, we use the property:

$\frac{1}{ {a}^{m} } = {a}^{- m}$

This implies that;

$\frac{1}{ {12}^{2} } = {12}^{ - 2}$

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2 years ago

Below are two parallel lines with a third line intersecting them.

Law Incorporation [45]

Answer:

The line intersecting is a transversal and x is 44 degrees.

Hope it helps!!!

7 0

2 years ago