Me for find each measurement indicated. round your answers to the nearest tenth.

A=52.8 miles (approximately)

Step-by-step explanation:

We can assume that this triangle is not a right angle, therefore we cannot use Pythagorean theorem.  Let's use the Law of Sines:

Where A is unknown, a=28 miles, b=32 miles, B=87°

Therefore by law of sines we have:

By multiplying 28 to Isolate sin(A) we have:

To cancel out sine on the right, we must multiply both by the inverse sine and so:

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

hope this !

step-by-step explanation:

d = distance between moon and sun, which in this problem is the hypotenuse of a right triangle.  

the distance y is the side opposite to angle x in the right triangle.   use the definition of the sine function from basic trigonometry.

sin(x) = y/d ⇒

d = y/sin(x)