So we assume that x=x and y=y is true for both situations so
3x+2y=-2
6x-y=6
6x-y=6
add y to both sides
6x=6+y
subtract 6 from both sides
6x-6=y
subsitute (6x-6) for y in first equation
3x+2(6x-6)=-2
distribute
3x+12x-12=-2
add like terms
15x-12=-2
add 12 to both sides
15x=10
divide both sides by 15
x=2/3
subsitute
3x+2y=-2
3(2/3)+2y=-2
6/3+2y=-2
2+2y=-2
subtract 2 from both sides
2y=-4
divide both sides by 2
y=-2
x=2/3
y=-2
solution in (x,y) form
(2/3,-2)
Answer:
It is A(maybe C but doubt it)
Step-by-step explanation:
4 gallons because 6 - 2 = 4 gallons & then 3/6 gallons -5/6 gallons would be 3 4/6 gallons + 2/6 = 4 gallons
Step-by-step explanation:
27.7%
Step-by-step explanation:
Let's call:
n: the number of adults interviewed
t: number of adults who watch tennis
d: number of adults who practice some sport
x: number of adults who watch tennis and do not practice a sport
The probability that a randomly chosen adult watches tennis and does not play any sports is calculated as follows:
- We calculate the probability that a selected adult will see tennis.
P(t) = 92/140 = 0.657
- We calculate the probability that an adult plays a sport:
P(d) = 81/140 = 0.5786
- We calculate the probability that an adult will see tennis and play some sport (See diagram attached)
P (t ∩ d) = 0.657 (0.5786) = 0.3802
Finally the probability that an adult who sees tennis does not play any sport is:
P(x) = P(t) - P(t ∩ d) = 0.657 - 0.3802
P(x) = 0.277
Answer:
did you ever get the answer?
Step-by-step explanation:
