Misha's test score decreased from 80% to 60%. what was the approximate percent decrease of misha's test score?

Hence, the percent decrease is:

25%

Step-by-step explanation:

It is given that:

Misha's test score decreased from 80% to 60%.

We know that the percent increase or decrease in the test score is given as:

Let the total score be'x'.

Hence,

similarly new score is:

Hence,

Hence, the percent decrease is:

25%

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