What is the value of x in the equation 1/5x- 2/3y = 30, when y = 15?
4
8
80
200

The answer is 200.

Step-by-step explanation:

1/5x - 2/3y = 30

(y = 15)

1/5x - 2/3(15) = 30

(Since y is equal to 15)

1/5x - 10 = 30

1/5x = 30 + 10

1/5x = 40

x = 40 x 5

x = 200

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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

30 people weigh 160 pounds or more