W(x) = 4x + 5
w(-8) = 4(-8) + 5 = -32 + 5 = -27
Answer:
B is correct
Step-by-step explanation: an infinite number of solutions means a coincident line...it is the same line
3y = 2x - 9...divide by 3
y = 2/3x - 3...hmm...same line as answer choice b....they are coincident lines and have infinite solutions
Answer:
Step-by-step explanation:
=> 3(5k + 2) + 5 = 3k - 1
=> 15k + 6 + 5 = 3k - 1
=> 15k + 11 - 3k + 1
=> 12k + 12
<u>Hence, correct answer is 12k + 12.</u>
Answer: x = -4, x = 5
Step-by-step explanation:
You can use the substitution method for this problem.
y = 
+ 2x, but y also = 3x +20.
Because of this, you can determine that +2x = 3x + 20 because they are both equal to the same thing, y.
Solve the quadratic equation you got from substitution:
+ 2x = 3x + 20
-x = 20
-x -20 = 0
You can factor this equation:
(x+4)(x-5) = 0
x = -4, x = 5
each coind has a 1/2 probability of landing on heads
3 coins would be 1/2 x 1/2 x 1/2 = 1/8 probability
