Answer:
Step-by-step explanation:
2a^-a-13=2
Subtract 2 from both sides :
2a^2-a-13=2=2-2
2a^2-a-15=0
Factor left side of the equation :
(2a+5) (a-3)=0
Set factors equal to 0 :
2a+5=0 or a-3=0
a=-5/2 or a=3
Answer:
Step-by-step explanation:
Let's draw it out:
Car 1 going Strait = x
Car 2 going left = y
A pedestrian walking straight. = z
In the "natural" rule of law with lights, it would be a left turn. But here, there are none.
So it should <em>technically </em>be the x to go first, then the y & z.
But in reality, y & z would have the right-of-way.
Answer:
0.160275
Step-by-step explanation:
P(5 time heads) =P(fair penny and 5 time heads + weighted penny and 5 time heads)
probability of fair penny = 99/100 (as one is removed)
probability of heads = 50% = 0.5 flipped 5 times
probability of weighted penny = 1/100
probability of heads for this penny = 90% = 0.9
substituting, we have
=(99/100) * (1/2)*5 + (1/100) * (0.9)5 = 0.036842
hence from Bayes theorem
P(weighted penny | 5 time heads) =P(weighted penny and 5 time heads) / P(5 time heads)
=(1/100)*(0.9)5 /0.036842 =0.160275
All of these answers are right
Answer:
the answer to the problem is 2.25. i think k=3 if x=3/4 and y=2.25
Step-by-step explanation: