Answer:
Direct Variation
Step-by-step explanation:
Given: A car travels at a distance of km. The formula that relates
to
is
To find: kind of variation
Solution:
The formula that relates to
is
Here, is a constant of proportionality.
Constant of proportionality is also called as constant of variation.
varies directly as
.
Therefore, this is a direct variation.
We need to find the probability of the card chosen at random is yellow or brown.
So, since there are 3 yellow cards and 7 brown cards, the total numbers of cards that are yellow or brown is:
Now, the probability that the chosen card is yellow or brown can be found by dividing the above value by the total number of cards in the box.
The total number of cards in the box is:
Thus, that probability is given by:
Therefore, the answer is: