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abigailb4424
10.12.2020 •
Mathematics
A group of friends wants to go to the amusement park. They have no more than $145 to spend on parking and admission. Parking is $9, and tickets cost $20 per person, including tax. Write and solve an inequality which can be used to determine pp, the number of people who can go to the amusement park.
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Ответ:
Inequality Equation
= $9 + 20p ≤ $145
The number of people that can go to the amusement park = 6 people
Step-by-step explanation:
Let the number of people who can go to the amusement park be represented as: p
A group of friends wants to go to the amusement park. They have no more than $145 to spend on parking and admission. Parking is $9, and tickets cost $20 per person, including tax.
The term no more than means equal to or less than
Hence, our inequality Equation =
$9 + $20 × x ≤ $145
$9 + 20p ≤ $145
Solving for p
$9 + 20p =& 145
Subtract $9 from both sides
$9 - $9 + 20p =$ 145 - $9
20p = 136
p = 136/20
p = 6.8 people
Since a person cannot be in decimal form, hence: only 6 people can go to the amusement park
Ответ:
Given a normal distribution with mean 120 and standard deviation 5.
We have to find number of standard deviations the measurement 134.9 is from the mean . For that we have to find z score corresponding to 134.9
The formula to find z score is
Z =![\frac{x - mean}{standard deviation}](/tpl/images/0085/9875/35acc.png)
=![\frac{134.9 - 120}{5}](/tpl/images/0085/9875/61ea6.png)
= 2.98
The measurement 134.9 is 2.98 standard deviation from mean