Aheart beat takes 0.8. how many seconds os it written as a fraction

The problem is asking you to convert 0.8 into fraction form. The number 0.8 is in decimal form and to change it to fraction form you have to get the number after the decimal point which is 8 in this problem.

8 would be the numerator of the fraction. Next step is to count how many numbers are there after the decimal point. In this problem, there is only one number so there will only be one zero beside 1 (10). 10 will be the numerator.

So, the fraction would be 8/10 or 4/5 (simplified form)

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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