Answer:
Step-by-step explanation:
Given
Required
Write the equivalent cosine function
The general formula is:
Where
Substitute for amplitude in
Substitute 3 for period in
<em>Multiply both sides by b</em>
<em>Divide through by 3</em>
Hence;
becomes
Answer:
9 red tiles
Step-by-step explanation:
Total number of tiles:
Total number of red tiles:
Probability of getting red in one draw:
<em>This means that you would expect to get red or 30% of the times.</em>
<em>Hence, when you draw tiles 30 times from the bag, you would expect red to be picked 30% of 30 times. This is:</em>
<em></em>
So, you would expect to draw a red tile from the bag 9 times.
