Answer=5/16 or 0.3125 feet
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
You need to set up and solve a system of linear equations here.
Let s and a represent the number of students and adults respectively.
Then s + a = 9, and s = 9 - a.
Total ticket cost for the adults was ($8/adult)(a)
and for the students ($5/student)(s).
Total cost of the tickets was then ($8/adult)(a) + ($5/student)(s) = $60.
Then our system of linear equations is:
8a + 5s = 60
a + s = 9, or s = 9 - a. Substituting 9 - a for s, we get:
8a + 5(9 - a) = 60.
Then 8a + 45 - 5a = 60, or 3a = 15.
Solving for a, we get a = 5.
Solving for s using s = 9 - a, we get s = 9 - 5, or s = 4.
There were 5 adults in the group (and 4 students).
The function is y=2x
this means that the solutions will have the form (x, y)=(x,2x).
For example: (0,0),(1,2),(2,4),(3,6) are solutions.
The first answer choice satisfies the above conditions.
The second answer choice contains (2,2), and (2,6), both of which do not satisfy the (x,2x) condition, so it's not correct.
The third answer choice contains (4,2), which again does not satisfy (x,2x), so not the right answer.
<span>(x^2-4x-6) factors into:</span>
(x -5.1623) (x+1.1623)
Therefore x = 5.1623 and x = -1.1623
(4x^2-8x-2) <span>factors into:
(x -2.2247) * (x +2.2474)
</span>
Therefore x = 2.2247 and x= -0.22474
1 pound= 16 oz
16/4= 4 apples
Hope this helps!
