8. A car travels 85 km in 51 minutes. (a) How far does it travel in 1 hour at the same speed? (b) How many seconds does it take to travel 510 m? step by step answer plz​

Part A

(85 km)/(51 min) = (x km)/(60 min)

85/51 = x/60

85*60 = 51x

5100 = 51x

51x = 5100

x = 5100/51

x = 100

Part B

510 m = 0.510 km

(85 km)/(51 min) = (0.510 km)/(x min)

85/51 = 0.510/x

85x = 51*0.510

85x = 26.01

x = 26.01/85

x = 0.306

This represents the number of minutes. Multiply by 60 to get the number of seconds

0.306 min = 0.306*60 = 18.36

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

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead