Solve either equation for either variable. Since the second one has y on its own, the easiest choice is to solve that for y.
-5x + y = 13 ⇒ y = 5x + 13
Now substitute this into the other equation to eliminate y and rewrite it entirely in terms of x :
-3x + 3y = 3 ⇒ -3x + 3 (5x + 13) = 3
Simplify and solve for x :
-3x + 15x + 39 = 3
12x = -36
x = -3
Substitute this into either original equation to solve for y. Plugging x = -3 into the first equation would give
-3 (-3) + 3y = 3
9 + 3y = 3
3y = -6
y = -2
So the solution to the system of equations is (x, y) = (-3, -2).
Answer:
125%
Step-by-step explanation:
80/100=8
80*x=100
100/80=1.25
1.25*100=125
x=125%
Answer:
(2,3)
Step-by-step explanation:
The given system is
y=3x-3
y=2x-1
We equate both equations and solve for x.
Group like terms to get:
We put x=2 into y=3x-3 to get:
As an ordered pair the solution is (2,3)
Answer:
The probability of not drawing blue is 0.3
Step-by-step explanation:
The bag contain a total of:
Blue marbles + green marbles + red marbles
= 777 + 222 + 111
= 1110
We are to find the probability of not drawing a blue marble, if a blue marble is not drawn then the drawn marble is either green or red marbles
P(not draw blue) = p(draw green) + p(draw red)
P(not draw blue) = 222/1110 + 111/1110
P(not draw blue) = 333/1110
P(not draw blue) = 0.3
Answer:
56.25
Step-by-step explanation:
I think I’m wrong. I divided by 2 since they are selling. Then getting the answer 56.25
