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3 years ago

Solve for x. Show your work. Help please

Mathematics

1 answer:

ozzi3 years ago

3 0

7x+1+10x-9=19x-18
add like terms
17x-8=19x-18
add 18 to both sides and subtract 17x from both
10=2x
divide by two
x=5

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3 years ago

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i) 0.872

ii) 0.300

iii) 0.76

iv) 0.704

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We are given the following information in the question:

Mean, μ = $261.50 per month

Standard Deviation, σ = $16.25

We are given that the distribution of monthly food cost for a 14- to 18-year-old male is a bell shaped distribution that is a normal distribution.

Formula:

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

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b) P(More than $270)

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

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

$P(x > 250) = 1 - 0.240 = 0.76 = 76.0\%$

d) P(Between $240 and $275)

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e) Thus, 0.704 is the probability that the monthly food cost for a randomly selected 14- to 18-year-old male is between $240 and $275.

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3 years ago

Help!!!!!!!!!!!!!!!!!!!!!!! SAY WHICH ONE YOU ARE ANSWERING!!!!!!!!!!!!!!!!!!!!

Over [174]

Answer:

100

Step-by-step explanation:

estimate 99.056603

Hope this helps!

Please mark brainliest!

Have a nice day!

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