Solve this system of equation by substitution
y = x+2
x + 2y = 1

( -1, 1)

Step-by-step explanation:

Substitute the first equation into the second and solve for x:

x + 2(x + 2) = 1

x + 2x + 4 = 1

3x + 4 = 1

3x = -3

x = -1

Then put that answer into the first equation to solve for y:

y = (-1) + 2

y = 1

You can check by putting those answers into the equations:

1 = -1 + 2

1 = 1

-1 + 2(1) = 1

-1 + 2 = 1

1 = 1

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%