From my notes I’ve the derivative of arctan(x)= 1/(1+x^2)
A mean is an arithmetic average of a set of observations. The amount that Jack has to earn in tips on Sunday if he wants to average $19 a day is $25.
<h3>What is Mean?</h3>
A mean is an arithmetic average of a set of observations. it is given by the formula,

As it is given that Jack makes $12 on Monday, $14 on Tuesday, $18 on Wednesday, $16 on Thursday, $26 on Friday and $22 on Saturday. And we need to know how much he should earn on Sunday, so the average is $19. Therefore, we can write,


Hence, the amount that Jack has to earn in tips on Sunday if he wants to average $19 a day is $25.
Learn more about Mean:
brainly.com/question/16967035
The least amout of parts it can be divided into is 15. (Common denom. Of fractions)
Make the y as the subject like y= 3x + 1
the slope was next to the x
so the slope is 3
i am a mathematics teacher. if anything to ask please pm me
Answer:
-146.03008
Step-by-step explanation:
(-8.149)(17.92) = -146.03008