Answer:
This study uses random sampling
This study uses a control group
This study uses a repeated measures design
Answer:
Write the problem as a mathematical expression.
X=−1/5; f(x)=(25/2)x+(−91/2)
Replace the variable x with x=−1/5 in the expression.
f(−1/5)=(25/2)(−1/5)−91/2
Simplify the result.
−48
Step-by-step explanation:
615-138 = 477 you start with 615 take away how many pens are left and then you get your answer
Answer:
Since I figure you don't need this answer anymore, I'm just using it for free pts
Step-by-step explanation:
Answer:
(B) $5.25
Step-by-step explanation:
We can create an equation to represent this problem.
Let's assume
is the cost of a ferris wheel ticket,
is the cost of a snow cone, and
is the cost of a cotton candy.
We bought two ferris wheel tickets, one snow cone, and one cotton candy. After a discount of 6 dollars, the price was 12.75.
This makes the equation 
Since we know the value of each ferris wheel ticket and the snow cone, we can simplify our equation by substituting in these values.

We can now subtract 7.5 from both sides to get the value of
, the cotton candy price.

So the cotton candy cost $5.25.
Hope this helped!