Answer: 125
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
since y is inversely proportional to x the equation relating them is
y =
← k is the constant of proportionality
to find k use the given condition when y = 7, x = 9
k = yx = 7 × 9 = 63
y =
← is the equation connecting them
when x = 21, then
y =
= 3
Answer:


Step-by-step explanation:
Calculate the value of trigonometry function.
and 
Split the angle between 0 to 90° using trigonometry formula.



Therefore, cos(480°) = -0.5



Therefore, sin(480°) = 0.866
Move over the # of decimal places as the negative exponent. 0.0907 is the correct answer!
Hope this helps, and please mark brainliest!