We can calculate EEE, the amount of euros that has the same value as DDD U. S. dollars, using the equation E=\dfrac{17}{20}DE=
20
17
Fraction form
DE, equals, start fraction, 17, divided by, 20, end fraction, D.
How many euros have the same value as 111 U. S. dollar?
20/17
euros
How many U. S. dollars have the same value as 111 euro?
dollars

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

in counting the number of heads in 4 coin flips, the probability that we get exactly one head is the probability that we get anyone of the following 4 outcomes: httt, thtt, ttht, or ttth. each has probability 1/16, so the probability to get exactly one head in 4 flips is 1/16 + 1/16 + 1/16 + 1/16 = 4/16 = 1/4.