I think maybe 3) would make the most sense because she wants a random sample of students and the other options are specific on the type of students.
Answer:
As shown in the attachment,
Step-by-step explanation:
Yes, there is 1760 yards in a mile.
A) x + .07x = 45.50
X is the price of the toy boat, •07x adds the tax for a total paid of $45.50
For this problem I would change:
2x + 3y = 25 into
-2x - 3y = -25
Then, I would add up both equations by lining them up top of another.
5x + 3y = 31
+ -2x - 3y = -25
3x = 6
x = 2
Now that you have x, solve for y.
5x + 3y = 31
5(2) + 3y = 31
10 + 3y = 31
3y = 21
y = 7
So, x is 2 and y is 7.
Check to see if the values are correct by plugging them into the other equation.
2x + 3y = 25
2(2) + 3(7) = 25
4 + 21 = 25
25 = 25
Since the values are correct, the solution to this problem is A (2, 7).
