Answer:
x ≈ 2.76
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan78° = 
= 
= 
( multiply both sides by x )
x × tan78° = 13 ( divide both sides by tan78° )
x = 
≈ 2.76 ( to 2 dec. places )
Ratio in the first sample = 250/1000 = 1/4 = 0.25
ratio in the second sample = 750/2000 = 0.375
hence ,<span> there is a greater proportion of smokers in the second city than in the first.
</span>
hope this helps!!
Answer:
158
Step-by-step explanation:
<span>Domain is all values of x that can make a function valid
so, x is all real values
and range is all values of f(x) for the above domain
So, range is also all real values</span>
