Answer:

Step-by-step explanation:
we know that
In the right triangle ABC
The function sine of angle 68 degrees is equal to divide the opposite side SB by the hypotenuse AC
so

substitute the values and solve for AC



B. miles because its a longer distance with leads to a smaller number
Answer:
<h2>No,they are not</h2>
Step-by-step explanation:
An algebraic expression must contain and unknown value to solve for.
-2x + 11 =31
-2x =31 - 11
-2x = 20
X = 20/2
X = 10