Justin got 7 rolls of quarters and 4 rolls of dimes.
Let the roll of quarters be x
Let the rolls of dimes be y
As total money received is $90, the equation becomes;
And he got 11 roll of coins, so equation becomes;
or .... (2)
Substituting the value of x from (2) in (1)
So, y = 4
x = 7
Hence, Justin got 7 rolls of quarters and 4 rolls of dimes.
Sample response: The Smith family has 2 choices to make, color
and style. By the fundamental counting principle, the product of the
number of choices of color and style must equal 8. So, there could be 1
color and 8 style choices, 2 colors and 4 styles, 4 colors and 2 styles,
or 8 colors and 1 style.
We have been given that the probability of Jaden making a free throw is 15%.
Now, we have to predict the number of free throws that he can expect to make if he attempts 40 free throws.
In order to find the total number of free throws, we will find 15% of 40.
Therefore, the number of free throws should be
Therefore, the number of free throws that he can expect to make if he attempts 40 free throws is 6.