140 x 10 equals 1400 and 70 x 20 equals 1400
Hmmm check your Unit Circle, if you don't have one, this is a good time to get one, there are many online, just do a quick search for "Unit Circle".
Step-by-step explanation:
law of sine :
a/sinA = b/sinB = c/sinC
with the sides and correlating angles being always opposite to each other.
we are dealing with a right-angled triangle here.
the train track is the Hypotenuse (the side opposite of the 90° angle) : 1600 ft.
the horizontal level "connection" from beginning to the end of the track is one leg, and the elevation difference at the end of the track is the second leg.
the 2 legs enclose a 90° angle, as the elevation goes straight up from the horizontal level.
so, we have
1600/sin(90) = elevation difference / sin(1.6)
sin(90) = 1
1600 = elevation difference / sin(1.6)
elevation difference = 1600 × sin(1.6) =
= 1600 × 0.027921639... =
= 44.67462196... ft
≈ 44.7 ft
Answer:
Step-by-step explanation:
58% of 10 pounds = 0.58 × 10 pounds = 5.8 pounds
Answer:
-6m+3-n
Step-by-step explanation:
-3 x 2m = - 6m
-3 x - 1=3
