Since 30% is the same as 0.30, multiply 0.30 by 720 to get 216. Answer is $216. Another way would be knowing that 30% is the same as the two of 30/100 or 3/10. This by multiplying 720 by 3 to get 2160 and then dividing by 10, you'd get the same answer. $216.
Answer:
57.6°
Step-by-step explanation:
It is always helpful to draw a picture. Also, you need to memorize all the definitions of the trig functions. For example,
sine of an angle = opposite side/hypotenuse
In your case, SQ is opposite side to angle R and QR is the hypotenuse
Therefore, sin R = 6.5/7.7
m∠R = arcsin (6.5/7.7) = 57.6°
The third number is 22 because 30 plus 20 is 50 and than subtract 72 from 50