Answer:
40 students
Step-by-step explanation:
We need a system of equations to find x or the students in advance:
2x + 4y = 800
x + y = 220
We can use substitution and isolate y in the second equation, which gives us y = 220 - x.
When we plug this into the first equation, we get 2x + 4(220 - x) = 800 and solving for x gives us x = 40.
Answer:
6
Step-by-step explanation:
|-6|
Apply rule |-a| = a
|-6| = 6
The distance between -6 and 0 is 6.
Answer:
It's 1/2, you go 1 step to the right and two steps up.
Answer:
14n
Step-by-step explanation:
n - beads for each necklace , (6n) - beads for 6 necklaces
(2/3)n - beads for each bracelets, 12*(2/3)n=8n - beads for 12 bracelets
Altogether = 6n + 8n = 14n
Sqrt[x] = -x
x= x ^ 2
x - x^2 = 0
-x(x-1)=0
x(x-1)=0
x = 1 or x = 0
sqrt 1 isn not equal to 0
x= 0
