Isolate the variable by dividing each side by the factors that don't contain the variable
v=2
A 30-60-90 triangle is special because of the relationship of its sides. Also <span>It turns out that in a 30-60-90 triangle, you can find the measure of any of the three sides, simply by knowing the measure of at least one side in the triangle.
Hope this helps. :)</span>
Answer:
A. 27
Step-by-step explanation:
21 x 3 = 63
9 x 3 = 27
G=61°, h=9. the opposite angles are equal, and the opposite sides are equal.
Let the speed of the current equal c
and the speed of the boat in still water equal b.
b + c = 1.5 (b - c)
b + c = 1.5b - 1.5c
0.5b = 2.5c
b = 5c
The speed of the current is 1.5 mph so
b = 5 * 1.5 = 7.5 mph
