Aset of pencils sells for $1.75 and costs $0.40 to make. twenty percent of the profit ( the difference between the purchase price and the amount it costs to make) from each set of pencil goes to a school. if 500 set are sold, what is the amount of money that will go to the school.

$135

Step-by-step explanation:

The profit is the revenue (selling price) - cost

Here, selling price per set is $1.75

Cost is $0.40

So, profit = 1.75 - 0.40 = $1.35 per set

If 500 set are sold, the total profit is:

500 * 1.35 = $675

20% of this profit (675) will go to school, so we need to find 20% of $675. We first convert the percentage to decimal and multiply with 675. Shown below:

20% = 20/100 = 0.2

0.2 * 675 = $135

Thus,

$135 goes to school

25

step-by-step explanation:

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2