2: Ratio 2.1 Daniel earns R 15 000 per month more than his wife, Andrea, who eams R
10 000 per month. Give the ratio of Daniel's come to Andrea's income
2.2 Sally and David's height are in the ratio 5 7. If David is 189 cm tall, how tall
is Sally? (3)
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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

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

the correct answers i think are b. and d.

give me brainliest if it is correct!

explanation:

step-by-step explanation: