Hey there!
FIrstly, we have to distribute
Combine like terms
Solve for your answer
Answer: 
Good luck on your assignment and enjoy your day!
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Perpendicular to x axis means then that the euation is x=something
given
(-5,-2)
(x,y)
so x=-5 is da equation
Given that S<span>am's distribution of meal costs has a mean of $9 and a standard deviation of $3, this means that the range of Sam's meal cost that are within one standard deviation is given by ($9 - 3, $9 + 3) = ($6, $12).
Given that Sam </span><span>always tips the server $2 plus 10% of the cost of the meal, this means that when the cost of the meal is $9, Sam tips $2 + (0.1 x 9) = $2 + $0.9 = $2.90
Therefore, the mean of the distribution of Sam's tips is $2.90
Similarly, the </span><span>range of Sam's tips that are within one standard deviation is given by ($2 + 0.1(6), $2 + 0.1(12)) = ($2 + 0.6, $2 + 1.2) = ($2.6, 3.2) = ($2.9 - $0.3, $2.9 + $0.3)
Therefore, </span><span>the standard deviation of the distribution of Sam's tips is $0.3</span>
Answer:
50°
Step-by-step explanation:
The missing angle is an exterior angle
The formula says, that the sum of the two apposite adjacent angles inside the triangle equals two the exterior angle.
So 30° + 20° = 50°
The missing angle is 50°
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-Chetan K
Answer: x=10
Step-by-step explanation:
2x-5=25
- 5
--------------------
2x=20
x=10
