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Aneli [31]
3 years ago
10

How many solutions does a system of linear equations in three variables have if in solving the system you correctly obtain the e

quation 12=12?
Mathematics
1 answer:
Alex73 [517]3 years ago
3 0
This system has infinite solutions
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Joseph owns a pizza restaurant. He sells pizzas for $15 each and charges $8 for delivery. What would your total cost be if you h
ANTONII [103]

Answer:

y = 15x + 8

Step-by-step explanation:

Hey there!

15x represents 15 times how many ever pizzas you order and 8 is for the delivery cost.

Hope this helps!

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nirvana33 [79]
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3 years ago
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

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Harlamova29_29 [7]

Answer:

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Step-by-step explanation:

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The scale of a map is 2 in = 7 feet. If the map distance is 11 inches what is the actual distance. Be sure to include label!
Arte-miy333 [17]
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